CN102162772B - Vehicle emission monitoring device and method - Google Patents

Abstract

The invention discloses a vehicle emission monitoring device and a method, which are characterized in that a relation between oil consumption and carbon dioxide is obtained according to carbon dioxide and instantaneous oil consumption read by a vehicle-mounted emission measurement system (OBS), an on-board diagnosis system (OBD) is used for reading the instantaneous oil consumption of a vehicle, the difference between the instantaneous oil consumption of the vehicle-mounted emission measurement system and the instantaneous oil consumption of the on-board diagnosis system is compared, and the relation between the instantaneous oil consumption of the on-board diagnosis system and the instantaneous oil consumption of the vehicle-mounted emission measurement system is established. And then, correcting and converting the instantaneous oil consumption of the on-board diagnosis system into the carbon dioxide emission according to the relation between the oil consumption and the carbon dioxide and the relation between the oil consumption and the carbon dioxide.

Description

Vehicle emission monitoring device and method

technical field

The present invention relates to a device and method for monitoring carbon dioxide emissions, in particular, the instantaneous fuel consumption read by an on-board diagnostic system (On-Board Diagnostics, OBD) is used to calculate the carbon dioxide emissions.

Background technique

Since humans burn fossil fuels and emit a large amount of greenhouse gases such as carbon dioxide, causing global warming, human beings pay more attention to carbon dioxide emissions, so many systems for detecting carbon dioxide emissions have been invented. Among them, the vehicle emission measurement system (On-Board Emission Measurement System, OBS) is relatively large, and the on-board emission measurement system measures carbon dioxide by using a heating non-divergent infrared analyzer for measurement. The volume concentration of the gas is measured by the absorption of a specific wavelength by a specific gas, and then converted into the emission. However, the cost of this method is high, so it cannot be installed on every vehicle to measure the pollution value emitted by the vehicle. However, if the vehicle emission measurement system is installed at a fixed point for measurement, it will not only be time-consuming, but also difficult to obtain real-time vehicle emissions. For pollution emission information, the installation and operation procedures of the vehicle-mounted emission measurement system are complicated, and it is difficult to realize it on the actual road.

Patent No. 097110938 of Taiwan Province of China mentions that the on-vehicle diagnostic system is used to obtain vehicle data, and the exhaust gas data is transmitted back to the remote server through the wireless network; The system can only roughly estimate exhaust gas information based on instantaneous fuel consumption, and the accuracy of the obtained information is not high, so it is difficult to use as a reference.

Chinese patent No. 200710055470.8, it mentions to measure automobile exhaust and fuel consumption with the composition of manifold pressure sensor, manifold temperature sensor, exhaust gas analyzer, although can measure automobile exhaust and fuel consumption, but its calculation Processes and systems are complicated.

Patent No. M366728 of Taiwan Province of China, which mentioned that after using satellite navigation to know a displacement, use its data to calculate the carbon emissions generated after the displacement. The data obtained by estimating carbon dioxide emissions in this way is open to discussion.

In view of this, the present invention aims at the above-mentioned problems, and proposes a vehicle emission monitoring device and method of a simple value-added tool of an on-vehicle diagnostic system to monitor carbon dioxide. missing.

Contents of the invention

The main purpose of the present invention is to provide a vehicle emission monitoring device and method, which is a simple value-added tool for an on-vehicle diagnostic system, which can read instantaneous fuel consumption from the on-vehicle diagnostic system and calculate carbon dioxide emissions. It can make the actual operation simpler and easier to install, and reduce the cost of measuring carbon dioxide, and is applicable to any vehicle with an on-board diagnostic system, and can quickly and instantly calculate the carbon dioxide emission.

The second object of the present invention is to provide a vehicle emission monitoring device and method, which reads the carbon dioxide and instantaneous fuel consumption of the on-board emission measurement system and the on-board diagnostic system, calculates two relational expressions, and compares the two The item relationship is stored in the vehicle emission monitoring device. In the process of calculating carbon dioxide emissions, it is no longer necessary to read the carbon dioxide and instantaneous fuel consumption through the on-board emission measurement system.

In order to achieve the above object, the present invention provides a vehicle emission monitoring device, which can calculate the carbon dioxide emission by using the instantaneous fuel consumption read by the on-board diagnostic system of the vehicle. The vehicle emission monitoring device includes:

An on-vehicle diagnostic system connector, connected to the on-vehicle diagnostic system to receive instantaneous fuel consumption;

a storage unit, which stores the relationship between fuel consumption and the relationship between fuel consumption and carbon dioxide; and

A calculation unit, which is electrically connected to the on-board diagnostic system connector and the storage unit, to receive driving data, and calculate the carbon dioxide emission produced by the instantaneous fuel consumption of the vehicle according to the fuel consumption relationship formula and the fuel consumption-carbon dioxide relationship formula .

In order to achieve the above object, the present invention also provides a vehicle emission monitoring method, comprising:

Read the instantaneous fuel consumption and carbon dioxide emissions of an on-board emission measurement system;

Using regression analysis or mathematical statistics analysis to obtain the relationship between fuel consumption and carbon dioxide;

Read the instantaneous fuel consumption of a diagnostic system on a vehicle;

Taking the instantaneous fuel consumption of the on-vehicle diagnostic system read and taking the instantaneous fuel consumption of the on-vehicle emission measurement system as a benchmark, establish a fuel consumption relational expression between the instantaneous fuel consumption of the on-vehicle diagnostic system and the instantaneous fuel consumption of the on-vehicle emission measurement system; and

According to the fuel consumption-carbon dioxide relational expression and the fuel consumption relational expression, the instantaneous fuel consumption of the diagnostic system on the vehicle is converted into carbon dioxide emission.

The specific embodiments are described in detail below, so that it is easier to understand the purpose, technical content, characteristics and effects of the present invention.

Description of drawings

Fig. 1 is a schematic diagram of the device structure of the present invention;

Fig. 2 is the flow chart of calculating carbon dioxide by using the vehicle emission monitoring device of the present invention;

Fig. 3 is the flow chart of the method for obtaining the relational expression of the present invention;

Fig. 4 is the relation figure of instant fuel consumption and carbon dioxide of the present invention;

5 is a diagram showing the relationship between the instantaneous fuel consumption difference and the engine torque between the on-board emission measurement system and the on-board diagnostic system of the present invention;

Fig. 6 is a graph showing the relationship between instantaneous fuel consumption under different engine torques according to the present invention.

Explanation of reference numerals: 10-vehicle emission monitoring device; 12-on-vehicle diagnostic system connector; 14-central processing unit; 16-storage unit; 18-network unit; 20-vehicle; 22-on-vehicle diagnostic system.

Detailed ways

The present invention calculates the carbon dioxide emission by reading the instantaneous fuel consumption of the on-vehicle diagnostic system. The method is to use the instantaneous fuel consumption and carbon dioxide emission read by the on-board emission measurement system to establish a relationship between fuel consumption and carbon dioxide. Then read the instantaneous fuel consumption of the on-board diagnostic system and the on-board emission measurement system, and use the instantaneous fuel consumption of the on-board emission measurement system as a benchmark to establish the fuel consumption relationship between the instantaneous fuel consumption of the on-board diagnostic system and the instantaneous fuel consumption of the on-board emission measurement system.

Referring to Fig. 1 at first, it is the device framework schematic diagram of the present invention, and this vehicle discharge monitoring device 10 comprises an on-vehicle diagnostic system connector 12, a computing unit 14, a storage unit 16 and a network unit 18; Wherein the on-vehicle diagnostic system connector 12 is connected to the on-board diagnostic system 22 of the vehicle 20 to receive instantaneous fuel consumption; the computing unit 14 can be a central processing unit, which is electrically connected to the on-board diagnostic system connector 12, the storage unit 16 and the network unit 18, and controls these components, and calculate the carbon dioxide emission of the vehicle 20 according to the fuel consumption relational expression and the fuel consumption-carbon dioxide relational expression in the storage unit 16; the network unit 18 is electrically connected with the computing unit 14, and the computing unit 14 controls the network unit 18 Transmitting or receiving wireless signals.

FIG. 2 is a flow chart of calculating carbon dioxide by using the vehicle emission monitoring device of the present invention. Please refer to FIG. 1 and cooperate with FIG. 2. First, in step S10, the on-vehicle diagnostic system connector 12 is the specification of SAEJ1962, connected to the on-vehicle diagnostic system 22, and the instantaneous fuel consumption read by the on-vehicle diagnostic system 22 is input into the storage unit Store in 16, utilize arithmetic unit 14 to read instantaneous fuel consumption and fuel consumption relational expression in storage unit 16 during step S12 and go computing, calculate a correction value, relevant fuel consumption relational expression is as shown in following equation (1):

Y _{OBS_fuel} (x _{OBD_fuel} ) = Z (1);

Among them, Y _{OBS_fuel} is the fuel consumption of the on-board emission measurement system; x _{OBD_fuel} is the fuel consumption of the on-board diagnostic system; Z is a constant (Z is a mathematical function which can be 1 time, 2 times...to N times). As shown in step S14, after calculating a correction value, the calculation unit 14 converts the correction value according to the relationship between fuel consumption and carbon dioxide in the storage unit 16, and calculates the emission of carbon dioxide. The relationship between fuel consumption and carbon dioxide is as follows: 2) as shown:

${\mathrm{<span\; class="notranslate">\; Fuel</span>}}_{\mathrm{<span\; class="notranslate">\; CB</span>}}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; t</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; =</span>\frac{{\mathrm{<span\; class="notranslate">\; R</span>}}_{\mathrm{<span\; class="notranslate">\; CWFHC</span>}}<span\; class="notranslate">\; \&times;</span>{\mathrm{<span\; class="notranslate">\; HC</span>}}_{\mathrm{<span\; class="notranslate">\; MASS</span>}}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; t</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; +</span>\frac{{\mathrm{<span\; class="notranslate">\; m</span>}}_{\mathrm{<span\; class="notranslate">\; C</span>}}}{{\mathrm{<span\; class="notranslate">\; m</span>}}_{\mathrm{<span\; class="notranslate">\; CO</span>}}}<span\; class="notranslate">\; \&times;</span>{\mathrm{<span\; class="notranslate">\; CO</span>}}_{\mathrm{<span\; class="notranslate">\; MASS</span>}}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; t</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; +</span>\frac{{\mathrm{<span\; class="notranslate">\; m</span>}}_{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="2"\; label="C\; m\; CO"\; filenames="HSA00000397532600051.png,HSA00000397532600061.png"\; state="\{\{state\}\}">C</figure-callout></span><figure-callout\; id="2"\; label="C\; m\; CO"\; filenames="HSA00000397532600051.png,HSA00000397532600061.png"\; state="\{\{state\}\}">\; </figure-callout>}}}{{\mathrm{<span\; class="notranslate">\; m</span>}}_{{}_{}}}<span\; class="notranslate">\; \&times;</span>{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="2"\; label="CO"\; filenames="HSA00000397532600051.png,HSA00000397532600061.png"\; state="\{\{state\}\}">CO</figure-callout></span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}\mathrm{<span\; class="notranslate">\; MASS</span>}}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; t</span>}<span\; class="notranslate">\; )</span>}{{\mathrm{<span\; class="notranslate">\; R</span>}}_{\mathrm{<span\; class="notranslate">\; CWF</span>}}}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 2</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; ;</span>$

为二氧化碳摩尔重(g)。Among them, Fuel _CB (t) is the fuel consumption rate (g/s); R _CWF is the carbon balance in fuel; R _CWFHC is the average carbon balance weight of hydrocarbons in exhaust gas; HC _MASS (t) is the instant hydrocarbon weight (g/s); CO _MASS (t) is the instant carbon monoxide weight (g/s); CO _2MASS (t) is the instant carbon dioxide weight (g/s); M _C is the molar weight of carbon atoms (g); M _CO is Carbon monoxide molar weight (g);

is the molar weight of carbon dioxide (g).

The above is the vehicle emission monitoring device, which can calculate the carbon dioxide emissions only by using the on-board diagnostic system. For the method of obtaining the relationship between fuel consumption and the relationship between fuel consumption and carbon dioxide, please refer to FIG. 3 for the method flow of the method for obtaining the relationship Figure, firstly, in step S20, the on-board emission measurement system reads the vehicle’s instantaneous fuel consumption and carbon dioxide emissions, and then proceeds to step S22 to obtain the relationship between carbon dioxide and instantaneous fuel consumption through regression analysis, please refer to Figure 4, Fig. 4 is the relation diagram of instantaneous fuel consumption and carbon dioxide, and draws a relational expression of fuel consumption and carbon dioxide, as shown in following equation (3):

y=0.3177x-2E-05(3);

Among them, x is the carbon dioxide emission (g/s); y is the instantaneous fuel consumption (g/s). Go to step S24, which is to read the instantaneous fuel consumption of the on-board emission measurement system and the on-board diagnostic system, and then go to step S26 to compare the difference between the two instantaneous fuel consumption, and filter out the instantaneous fuel consumption of the two under the same conditions, please refer to the figure 5 is a diagram of the relationship between the instantaneous fuel consumption difference between the on-board emission measurement system and the on-board diagnostic system and the engine torque. From Figure 5, we know that the key factor of the instantaneous fuel consumption is the engine torque, and then use regression analysis to draw the on-board emission measurement system and the on-board diagnostic system. Instantaneous fuel consumption distribution diagram, Figure 6 is the instantaneous fuel consumption relationship diagram under different engine torques (Engine Torque), from Figure 6 we can see that there are different relationships under different engine torques, such as when the engine torque is 0% to 10% related to fuel consumption relationship The formula is shown in the following equation (4):

y= ^-22.081x3 + ^{19.914x2-3.3432x} +0.6113(4);

When the engine torque is 10% to 20%, the relevant fuel consumption relationship is as shown in the following equation (5):

y= ^{1.2133x3-4.8212x2} + ^7.6662x -2.6006(5);

When the engine torque is 20% to 30%, the relevant fuel consumption relationship is as shown in the following equation (6):

y= ^-2.6209x3 + ^{18.622x2-42.157x} +32.39(6);

When the engine torque is 30% to 40%, the relevant fuel consumption relationship is as shown in the following equation (7):

y= ^{0.3059x3-2.7413x2} + ^8.7483x -7.5707(7);

When the engine torque is 40% to 50%, the relevant fuel consumption relationship is as shown in the following equation (8):

y= ^-0.6574x3 + ^{9.2721x2-41.689x} +62.921(8);

When the engine torque is 50% to 60%, the relevant fuel consumption relationship is as shown in the following equation (9):

y=-5.2747x3+107.78x 2-731.1x+1651.4(9);

When the engine torque is 60% to 70%, the relevant fuel consumption relationship is as shown in the following equation (10):

y= ^{1.1732x3-27.683x2} + ^217.61x -563.56(10);

When the engine torque is 70% to 80%, the relevant fuel consumption relationship is as shown in the following equation (11):

y= ^-0.6158x3 + ^{18.592x2-186.07x} +625.14(11);

When the engine torque is 80% to 90%, the relevant fuel consumption relationship is as shown in the following equation (12):

y=-102.09x ³ +3646.2x ² -43399x+172169(12);

Above, x is the fuel consumption of the on-board diagnostic system (g/s); y is the fuel consumption of the on-board emission measurement system (g/s). Finally, entering step S28, the carbon dioxide emission can be obtained by using the instantaneous fuel consumption of the on-board diagnostic system and using the relational formula designed in the hardware.

The aforementioned vehicle emission monitoring device and method can make the actual operation easier and easier to install, and can reduce the cost of measuring carbon dioxide, and is applicable to any vehicle with an on-board diagnostic system, and can quickly and instantly calculate the carbon dioxide emission.

The above description is only illustrative, rather than restrictive, to the present invention. Those of ordinary skill in the art understand that many modifications and changes can be made without departing from the spirit and scope defined by the following appended claims. Or equivalent, but all will fall within the protection scope of the present invention.

Claims (9)

1. a vehicular discharge monitoring device is characterized in that, its instantaneous oil consumption that is diagnostic system reads on the car that can utilize on the vehicle calculates CO2 emissions, and this vehicular discharge monitoring device comprises:

Diagnostic system joint on one car connects diagnostic system on this car, to receive instantaneous oil consumption;

One storage element, it is to store oil consumption relational expression and oil consumption and carbon dioxide relational expression; And

One arithmetic element, it is electrically connected diagnostic system joint and this storage element on this car, with the reception travelling data, and according to this oil consumption relational expression and this oil consumption and carbon dioxide relational expression, the CO2 emissions that the instantaneous oil consumption of this vehicle of computing produces.

2. vehicular discharge monitoring device according to claim 1, it is characterized in that, during these these CO2 emissions of arithmetic element computing, it is the instantaneous oil consumption of reading first diagnostic system on this car, and carry out computing according to this oil consumption relational expression, to obtain the correction numerical value after the conversion, this arithmetic element should be proofreaied and correct the numerical value translation operation and go out this CO2 emissions again according to this oil consumption and carbon dioxide relational expression.

3. vehicular discharge monitoring device according to claim 2 is characterized in that, this oil consumption relational expression is as follows:

Y _{OBS_fuel}(x _{OBD_fuel})＝Z

Wherein, Y _{OBS_fuel}Be the oil consumption of vehicle-mounted discharge measurement system; x _{OBD_fuel}Be diagnostic system oil consumption on this car; Z is a constant, and this oil consumption relational expression is different because of the difference of engine torque, when engine torque is that 0% to 10% relevant oil consumption relational expression is as follows:

y＝-22.081x ³+19.914x ²-3.3432x+0.6113；

When engine torque is that 10% to 20% relevant oil consumption relational expression is as follows:

y＝1.2133x ³-4.8212x ²+7.6662x-2.6006；

When engine torque is that 20% to 30% relevant oil consumption relational expression is as follows:

y＝-2.6209x ³+18.622x ²-42.157x+32.39；

When engine torque is that 30% to 40% relevant oil consumption relational expression is as follows:

y＝0.3059x ³-2.7413x ²+8.7483x-7.5707；

When engine torque is that 40% to 50% relevant oil consumption relational expression is as follows:

y＝-0.6574x ³+9.2721x ²-41.689x+62.921；

When engine torque is that 50% to 60% relevant oil consumption relational expression is as follows:

y＝-5.2747x ³+107.78x ²-731.1x+1651.4；

When engine torque is that 60% to 70% relevant oil consumption relational expression is as follows:

y＝1.1732x ³-27.683x ²+217.61x-563.56；

When engine torque is that 70% to 80% relevant oil consumption relational expression is as follows:

Y=-0.6158X ³+ 18.592x ²-186.07x+625.14; And

When engine torque is that 80% to 90% relevant oil consumption relational expression is as follows:

y＝-102.09x ³+3646.2x ²-43399x+172169；

Wherein, x is diagnostic system oil consumption oil consumption on the car, the g/s of unit; Y is the oil consumption of vehicle-mounted discharge measurement system, the g/s of unit.

4. vehicular discharge monitoring device according to claim 2 is characterized in that, this oil consumption and carbon dioxide relational expression are as follows:

${\mathrm{Fuel}}_{\mathrm{CB}}\left(t\right)=\frac{R_{\mathrm{CWFHC}}\&times;{\mathrm{HC}}_{\mathrm{MASS}}\left(t\right)+\frac{M_C}{M_{\mathrm{CO}}}\&times;{\mathrm{CO}}_{\mathrm{MASS}}\left(t\right)+\frac{M_C}{M_{{\mathrm{CO}}_2}}\&times;{\mathrm{CO}}_{2\mathrm{MASS}}\left(t\right)}{R_{\mathrm{CWF}}}$

Wherein, Fuel _CB(t) be fuel consumption, the g/s of unit; R _CWFBe Carbon balance in the fuel oil; R _CWFHCAverage Carbon balance weight for hydrocarbon in the waste gas; HC _MASS(t) be instant hydrocarbon weight, the g/s of unit; CO _MASS(t) be instant carbon monoxide weight, the g/s of unit; C0 _2MASS(t) be instant carbon dioxide weight, the g/s of unit; M _CFor the carbon atom mole is heavy, the g of unit; M _COFor the carbon monoxide mole is heavy, the g of unit;

For the carbon dioxide mole weighs ,Unit g

5. vehicular discharge monitoring device according to claim 1 is characterized in that, more comprises a radio communication unit, and it is electrically connected this arithmetic element, and transmits or accept wireless signal.

6. a vehicular discharge monitoring method is characterized in that, comprising:

Read instantaneous oil consumption and the CO2 emissions of a vehicle-mounted discharge measurement system;

Utilize regretional analysis or mathematical statistics analysis to draw an oil consumption and carbon dioxide relational expression the instantaneous oil consumption of read and carbon dioxide;

Read the instantaneous oil consumption of diagnostic system on the car;

With read instantaneous oil consumption of diagnostic system on this car, as benchmark, set up the oil consumption relational expression of the instantaneous oil consumption of diagnostic system and the instantaneous oil consumption of this vehicle-mounted discharge measurement system on this car with the instantaneous oil consumption of this vehicle-mounted discharge measurement system; And

According to this oil consumption and carbon dioxide relational expression and this oil consumption relational expression, the instantaneous oil consumption of diagnostic system on this car is converted to CO2 emissions.

7. vehicular discharge monitoring method according to claim 6, it is characterized in that, obtaining this oil consumption relational expression is to utilize diagnostic system and the instantaneous fuel consumption data database data of this vehicle-mounted discharge measurement system on this car, both instantaneous oil consumption under screening the same terms, to obtain the statistical value of both instantaneous oil consumption, utilize this statistical value to draw diagnostic system and the instantaneous fuel consumption values distribution plan of this vehicle-mounted discharge measurement system on this car with regretional analysis or mathematical statistics analysis, draw this oil consumption relational expression.

8. vehicular discharge monitoring method according to claim 6 is characterized in that, this oil consumption and carbon dioxide relational expression are as follows:

${\mathrm{Fuel}}_{\mathrm{CB}}\left(t\right)=\frac{R_{\mathrm{CWFHC}}\&times;{\mathrm{HC}}_{\mathrm{MASS}}\left(t\right)+\frac{M_C}{M_{\mathrm{CO}}}\&times;{\mathrm{CO}}_{\mathrm{MASS}}\left(t\right)+\frac{M_C}{M_{{\mathrm{CO}}_2}}\&times;{\mathrm{CO}}_{2\mathrm{MASS}}\left(t\right)}{R_{\mathrm{CWF}}}$

Wherein, Fuel _CB(t) be fuel consumption, the g/s of unit; R _CWFBe Carbon balance in the fuel oil; R _CWFHCAverage Carbon balance weight for hydrocarbon in the waste gas; HC _MASS(t) be instant hydrocarbon weight, the g/s of unit; CO _MASS(t) be instant carbon monoxide weight, the g/s of unit; CO _2MASS(t) be instant carbon dioxide weight, the g/s of unit; M _CFor the carbon atom mole is heavy, the g of unit; M _COFor the carbon monoxide mole is heavy, the g of unit;

For the carbon dioxide mole is heavy, unit g

9. vehicular discharge monitoring method according to claim 6 is characterized in that, this oil consumption relational expression is as follows:

Y _{OBS_fuel}(x _{OBD_fuel})＝Z

Wherein, Y _{OBS_fuel}This vehicle-mounted discharge measurement system oil consumption; x _{OBD_fuel}Be diagnostic system oil consumption on this car; Z is a constant, and this oil consumption relational expression is different because of the difference of engine torque, when engine torque is that 0% to 10% relevant oil consumption relational expression is as follows:

y＝-22.081x ³+19.914x ²-3.3432x+0.6113；

When engine torque is that 10% to 20% relevant oil consumption relational expression is as follows:

y＝1.2133x ³-4.8212x ²+7.6662x-2.6006；

When engine torque is that 20% to 30% relevant oil consumption relational expression is as follows:

y＝-2.6209x ³+18.622x ²-42.157x+32.39；

When engine torque is that 30% to 40% relevant oil consumption relational expression is as follows:

y＝0.3059x ³-2.7413x ²+8.7483x-7.5707；

When engine torque is that 40% to 50% relevant oil consumption relational expression is as follows:

y＝-0.6574x ³+9.2721x ²-41.689x+62.921；

When engine torque is that 50% to 60% relevant oil consumption relational expression is as follows:

y＝-5.2747x ³+107.78x ²-731.1x+1651.4；

When engine torque is that 60% to 70% relevant oil consumption relational expression is as follows:

y＝1.1732x ³-27.683x ²+217.61x-563.56；

When engine torque is that 70% to 80% relevant oil consumption relational expression is as follows:

Y=-0.6158x ³+ 18.592x ²-186.07x+625.14; And

When engine torque is that 80% to 90% relevant oil consumption relational expression is as follows:

y＝-102.09x ³+3646.2x ²-43399x+172169；

Wherein, x is diagnostic system oil consumption oil consumption on the car, the g/s of unit; Y is the oil consumption of vehicle-mounted discharge measurement system, the g/s of unit.

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