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CN109751149A - Low pressure outer combustion-ing engine suitable for pluralities of fuel - Google Patents

Low pressure outer combustion-ing engine suitable for pluralities of fuel Download PDF

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Publication number
CN109751149A
CN109751149A CN201910082977.5A CN201910082977A CN109751149A CN 109751149 A CN109751149 A CN 109751149A CN 201910082977 A CN201910082977 A CN 201910082977A CN 109751149 A CN109751149 A CN 109751149A
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China
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gas
cylinder
heat exchanger
expansion
expansion cylinder
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CN201910082977.5A
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Chinese (zh)
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李玉龙
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Individual
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Individual
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Priority to CN201910082977.5A priority Critical patent/CN109751149A/en
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Abstract

A kind of low pressure outer combustion-ing engine suitable for pluralities of fuel, including compression cylinder, heat exchanger plates, expansion cylinder and burner;Compression cylinder has compression cylinder inlet door and compression cylinder exhaust valve, and expansion cylinder has expansion cylinder intake valve and expansion cylinder exhaust valve;Compression cylinder exhaust valve is connected through compression cylinder exhaust pipe with the inlet for pressurised gas of heat exchanger plates, and the compressed gas of heat exchanger plates exports expanded cylinder air inlet pipe and is connected with the inlet valve of expansion cylinder;The exhaust valve of expansion cylinder is connected through exhaust pipe with the gas feed of burner, and the high-temperature gas outlet of burner is connected through high-temperature gas service with the high-temperature gas import of heat exchanger plates;High-temperature gas through the compressed compressed gas of compression cylinder in heat exchanger plates with burner discharge exchanges heat, and enters expansion cylinder expansion work after absorbing the heat of high-temperature gas.

Description

Low pressure outer combustion-ing engine suitable for pluralities of fuel
Technical field
The field of dynamic power machine is needed applied to automobile generating etc..
Background technique
Today of automobile rapid proliferation at home, air pollution control, energy consumption safety, alternative fuel and power Scheme diversification etc. has become the major fields of relevant industries technological development.
Particularly, in household automotive field, as technology develops, Technology of Hybrid Electric Vehicle is also more widely applied. The requirement of engine peak torque can be greatly reduced in the drive system of hybrid power.That this variation refers to for the present invention There is current advanced 1/5th an or so volumetric power density of pressurization directly jetting gasoline engine, but fuel category multiselect, but also with higher The low pressure outer combustion-ing engine of the thermal efficiency provides commonly used possibility on vehicle.
Summary of the invention
It is intended to invention and a kind of low pressure outer combustion-ing engine suitable for pluralities of fuel is provided, to realize burning highly effective, The good technical effect of economy;Due to being greatly reduced using the burning tissues difficulty of external combustion scheme, fuel, reduce to fuel Type limitation and quality requirements;Fuel combustion is more abundant, improves the original machine discharge of harmful exhaust.
To reach above-mentioned requirements, the technical solution adopted by the present invention is that: it provides outside a kind of low pressure suitable for pluralities of fuel Combustion engine, which is characterized in that including compression cylinder, heat exchanger plates, expansion cylinder and burner;Compression cylinder has compression cylinder inlet door With compression cylinder exhaust valve, expansion cylinder has expansion cylinder intake valve and expansion cylinder exhaust valve;Compression cylinder exhaust valve is vented through compression cylinder Pipe is connected with the inlet for pressurised gas of heat exchanger plates, and the compressed gas of heat exchanger plates exports the air inlet of expanded cylinder air inlet pipe and expansion cylinder Door is connected;The exhaust valve transtracheal of expansion cylinder is connected with the gas feed of burner, and gas and fuel burn in the burner, combustion The high-temperature gas that burner is burnt is connected through high-temperature gas service with the high-temperature gas import of heat exchanger plates by outlet; High-temperature gas through the compressed compressed gas of compression cylinder in heat exchanger plates with burner discharge exchanges heat, and absorbs high-temperature gas Heat after enter expansion cylinder expansion work.
Further, first expanded cylinder exhaust pipe enters heat exchanger plates to the gas of the exhaust valve discharge of expansion cylinder, in heat exchanger plates Enter combustion chamber through combustor air inlet pipe again after being exchanged heat with compressed gas and participates in burning.
Further, compression cylinder is piston type compressed cylinder.
Further, expansion cylinder is piston type expansion cylinder
Further, fuel is derv fuel, gasoline, natural gas, liquefied petroleum gas, coal combustion gas, coal, stalk or wood Bavin.
Further, it is provided with heat exchanger on pressure energy-storage container, from acting tailpipe 9 ' or high-temp waste gas tailpipe 12 introduce the gas of higher temperatures to heat exchanger to keep the temperature to pressure energy-storage container, and acting tailpipe is from combustor air inlet Pipe branch.
Further, the exit of pressure energy-storage container is provided with heat exchanger, from acting tailpipe 9 ' or high-temp waste gas row The gas that gas tail pipe 12 introduces higher temperature is heated to heat exchanger with carrying out compressed gas in exit, and do work tailpipe From combustor air inlet pipe branch.
The workmanship working medium air and burning working medium air separation of low pressure outer combustion-ing engine suitable for pluralities of fuel, workmanship Working medium obtains heat by heat exchange mode during isobaric expansion.Fuel sprays into low-pressure combustion container, since back pressure is low, fuel Injection will obtain better atomizing effect, be conducive to be sufficiently mixed with combustion air;Relative to traditional vehicle gasoline engine and bavin Oil machine, the incorporation time of new engine combustion mixture can be significantly increased several times even tens times, and incorporation time is abundant;It is flammable mixed It closes gas burning close to atmospheric pressure with excess oxygen, these can contain oxious component carbon monoxide in tail gas, hydrocarbon, particle The generation of object.Low-pressure combustion, so that maximum combustion temperature controllably except the range that nitrogen oxides largely generates, reduces harmful nitrogen The formation of oxide.
Low pressure outer combustion-ing engine suitable for pluralities of fuel inlet and exhaust valve control use for reference regular gasoline machine it is variable just When scheme, and creatively the compression cylinder and expansion cylinder of workmanship Working medium gas are separated to obtain the expansion bigger than compression ratio Than, and make compression ratio and expansion ratio flexibly reasonably combined on demand.Since expansion ratio can increase on demand, so that machine makes up Compression ratio and the lower bring disadvantage of operating pressure, and working medium waste heat after workmanship is recycled by heat exchange mode, It calculates and is known under conditions of being furnished with excellent heat exchanger by theoretical modeling, it is new using the relatively simple natural aspiration scheme of structure The indicated work thermal efficiency of machine can be more than 45%;Higher reach can be obtained if the intake method using charge inter cooling The 54% indicated work thermal efficiency, while peak torque and power also accordingly increase.Since new engine is in the difference of revolving speed and load Optimum compression ratio and expansion ratio are operable under operating condition, to obtain the preferable thermal efficiency, therefore its composite fuel economy will It is expected to better than current traditional regular gasoline machine 25%~35%.
Low pressure outer combustion-ing engine suitable for pluralities of fuel is due to needing biggish heat exchanger and workmanship power pressure It is lower, therefore the power that unit volume can be provided is smaller.In the enging cabin for being suitable for currently common compact family saloon In, it is expected to manufacturing rated power is more than the naturally aspirated new engine that 40 kilowatts of peak torques are more than 70 Ns of rice, and indicated work shows function Figure is as shown in Figure 2;Cooperate motor special and battery, the oil electric mixed dynamic scheme that Vehicles Collected from Market generallys use is made.
The recycling that is used for for such as adding one about 30 liters 40 kilograms of pressure maintaining or so to the machine stores vehicle deceleration braking energy High pressure gas energy storage container, then its can be provided for one about 1.4 tons or so average family cars from parking start accelerates to five The primary required energy of 60 kilometers of speed per hours.Cooperate the compression of this power-assisted short-term during starting process or normally travel empty Gas energy storage device, the manufactured new gas-oil hybrid vehicle based on low pressure outer combustion-ing engine accelerate power Performance will be more than to be equipped with rated power in the vehicle of 100 kilowatts or so of 1.8 liters of natural aspiration gasoline engines, and will be provided with leveling off to The energy-saving effect of current oil electric mixed dynamic scheme.
Detailed description of the invention
Fig. 1: low pressure outer combustion-ing engine schematic structural diagram of the first embodiment
Fig. 2: the big load indicator card of low pressure outer combustion-ing engine first embodiment
Fig. 3: low pressure outer combustion-ing engine first embodiment Smaller load indicator card
Fig. 4: low pressure outer combustion-ing engine schematic structural diagram of the second embodiment
1 part name of attached drawing:
1, compression cylinder inlet door;2, compression cylinder;3, compression cylinder exhaust pipe;4, heat exchanger plates;5, expansion cylinder high-pressure pipe;6 Expand cylinder intake valve;7, expansion cylinder;8, expansion cylinder exhaust pipe;9, combustor air inlet pipe;9 ', do work tailpipe;10, it burns Device;11, high-temperature gas service;12, high-temp waste gas tailpipe
Specific embodiment
According to the first embodiment of the application, as shown in Figure 1, providing a kind of low pressure external-burning hair suitable for pluralities of fuel Motivation, including compression cylinder 2, heat exchanger plates 4, expansion cylinder 7 and burner 10;There is compression cylinder 2 compression cylinder inlet door 1 and compression cylinder to arrange Valve, expansion cylinder 7 have expansion cylinder intake valve 6 and expansion cylinder exhaust valve;Compression cylinder exhaust valve is through compression cylinder exhaust pipe 3 and heat exchange The inlet for pressurised gas of plate 4 is connected, and the compressed gas of heat exchanger plates 4 exports expanded cylinder air inlet pipe 5 and expansion 6 phase of cylinder intake valve Even;The exhaust valve of expansion cylinder is connected through exhaust pipe 8 with the gas feed of burner 10, and gas and fuel fire in burner 10 It burns, the high-temperature gas that the burning of burner 10 obtains passes through high-temperature gas of the outlet through high-temperature gas service 11 Yu heat exchanger plates Import is connected;The high-temperature gas being discharged in heat exchanger plates 4 with burner 10 through the compressed compressed gas of compression cylinder 2 is changed Heat enters 7 expansion work of expansion cylinder after absorbing the heat of high-temperature gas.
Preferably, first expanded cylinder exhaust pipe 8 enters heat exchanger plates 4 to the gas of expansion cylinder exhaust valve discharge, in heat exchanger plates 4 Enter combustion chamber 10 through combustor air inlet pipe 9 again after being exchanged heat with compressed gas and participates in burning.
Compression cylinder 2 can choose as piston type compressed cylinder, and expansion cylinder 7 can choose as piston type expansion cylinder.
Fuel can choose to fire for derv fuel, gasoline, natural gas, liquefied petroleum gas, coal combustion gas, even biology Material, coal, stalk or firewood.
The course of work of low pressure outer combustion-ing engine suitable for pluralities of fuel is as follows:
When 2 rotary-piston of compression cylinder passes through upper vertex, compression cylinder inlet door 1 is opened, and piston continues traveling downwardly, and aspirates nature In air, the close moment of compression cylinder inlet door 1 is determined as needed for air inflow;Compression cylinder 2 rotates uplink, in cylinder Air is compressed, pressure increase.When pressure is more than the pressure in compression cylinder exhaust pipe 3, pressure-air is discharged into compression cylinder exhaust In pipe 3.Compression cylinder exhaust pipe 3 and expansion cylinder high-pressure pipe 5 are connected by the heat exchanger channels in heat exchanger plates 4, are formed biggish One constant volume high temperature and high pressure gas cavity.High pressure gas is absorbed by heat exchange from expansion cylinder exhaust pipe 8 and height in heat exchanger plates 4 The gas heat passed through in warm gas lines 11, pressure rise.
When the piston of expansion cylinder 7 passes through upper vertex, expansion cylinder intake valve 6 is opened, from expansion cylinder high-pressure pipe 5 High temperature and high pressure gas enter expansion cylinder 7, push 7 downlink of piston to start to do manual work;High temperature and high pressure gas chamber pressure is corresponding simultaneously It reduces.It is closed in required expansion of appropriate moment cylinder intake valve 6,7 piston of expansion cylinder continues traveling downwardly workmanship and pushes crankshaft rotation, gas The decline of body pressure and temperature.When 7 piston of expansion cylinder rotates uplink, exhaust valve is opened, and high-temperature low-pressure gas is expelled to expansion cylinder row Tracheae 8.
The expanded cylinder exhaust pipe 8 of high-temperature exhaust air enters heat exchanger plates 4, carries out to the high pressure gas in compression exhaust pipe 3 preliminary Heating.By heat exchanger plates 4, gas temperature has and reduces to a certain degree, is divided into two-way.Enter combustion by combustor air inlet pipe 9 all the way Burner 10, flow is allocated according to needed for the Combustion System of burner;Residual gas is discharged into entrance by acting exhaust pipe 9 ' Atmosphere, acting tailpipe 9 ' is from 9 branch of combustor air inlet pipe.It is passed through by the gas that combustor air inlet pipe 9 enters burner 10 High-temperature gas is formed after crossing fuel combustion heat release, 4 pairs of workmanship Working medium gas of heat exchanger plates are entered by high-temperature gas service 11 It is heated, is discharged into atmosphere using high-temp waste gas tailpipe 12.
According to second embodiment, as shown in figure 4, a pressure energy-storage container is arranged between compression cylinder 2 and expansion cylinder 7 15, to recycle storage vehicle braking energy, compressed gas is provided for expansion cylinder.Preferably, it is provided on pressure energy-storage container Heat exchanger, from the gas of acting tailpipe 9 ' or the introducing higher temperature of high-temp waste gas tailpipe 12 to heat exchanger to pressure Energy-storing container is kept the temperature;Or the exit of pressure energy-storage container is provided with heat exchanger, from acting tailpipe 9 ' or high temperature The gas that exhausting waste gas tail pipe 12 introduces higher temperature is heated to heat exchanger with carrying out compressed gas in exit, to subtract The small loss for leading to institute's storage energy because of heat dissipation.
The present invention is other than possible application is on vehicular traffic, moreover it is possible to it is developed into miniature movable type generating set, Due to the characteristic of its multi fuel, the temporary electrical power supply in the inconvenient area of fuel delivery can overcome the disadvantages that.If minimizing the machine, The energy recycle device of common gasoline and diesel engine high-temp waste gas waste heat can also then be developed into.

Claims (8)

1. be suitable for pluralities of fuel low pressure outer combustion-ing engine, which is characterized in that including compression cylinder, heat exchanger plates, expansion cylinder and Burner;Compression cylinder has compression cylinder inlet door and compression cylinder exhaust valve, and expansion cylinder has expansion cylinder intake valve and expansion cylinder row Valve;Compression cylinder exhaust valve is connected through compression cylinder exhaust pipe with the inlet for pressurised gas of heat exchanger plates, and the compressed gas of heat exchanger plates goes out The expanded cylinder air inlet pipe of mouth is connected with expansion cylinder intake valve;The burner of expansion cylinder exhaust valve expanded cylinder exhaust pipe and burner Air inlet pipe is connected, and gas and fuel burn in the burner, and the high-temperature gas that burner combustion obtains is by outlet through high temperature Gas lines are connected with the high-temperature gas import of heat exchanger plates;Through the compressed compressed gas of compression cylinder in heat exchanger plates with combustion The high-temperature gas of burner discharge exchanges heat, and enters expansion cylinder expansion work after absorbing the heat of high-temperature gas.
2. low pressure outer combustion-ing engine as described in claim 1, which is characterized in that the gas of the exhaust valve discharge of expansion cylinder is first Expanded cylinder exhaust pipe enters heat exchanger plates, enters combustion through combustor air inlet pipe again after being exchanged heat in heat exchanger plates with compressed gas It burns room and participates in burning.
3. low pressure outer combustion-ing engine as described in claim 1, which is characterized in that compression cylinder is piston type compressed cylinder.
4. low pressure outer combustion-ing engine as described in claim 1, which is characterized in that expansion cylinder is piston type expansion cylinder.
5. low pressure outer combustion-ing engine as described in claim 1, which is characterized in that the fuel is diesel oil, gasoline, natural Air-liquid liquefied oil gas, coal combustion gas, coal, stalk or firewood.
6. low pressure outer combustion-ing engine as described in claim 1, which is characterized in that one is arranged between compression cylinder and expansion cylinder A pressure energy-storage container provides compressed gas to recycle storage vehicle braking energy for expansion cylinder.
7. low pressure outer combustion-ing engine as claimed in claim 6, which is characterized in that be provided with heat exchange on pressure energy-storage container Device, from the gas of acting tailpipe 9 ' or the introducing higher temperature of high-temp waste gas tailpipe 12 to heat exchanger to pressure energy-storage Container is kept the temperature, and acting tailpipe is from combustor air inlet pipe branch.
8. low pressure outer combustion-ing engine as claimed in claim 6, which is characterized in that the exit of pressure energy-storage container is provided with Heat exchanger, from the gas of acting tailpipe 9 ' or the introducing higher temperature of high-temp waste gas tailpipe 12 to heat exchanger to export Place carries out compressed gas and is heated, and acting tailpipe is from combustor air inlet pipe branch.
CN201910082977.5A 2019-01-28 2019-01-28 Low pressure outer combustion-ing engine suitable for pluralities of fuel Pending CN109751149A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910082977.5A CN109751149A (en) 2019-01-28 2019-01-28 Low pressure outer combustion-ing engine suitable for pluralities of fuel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910082977.5A CN109751149A (en) 2019-01-28 2019-01-28 Low pressure outer combustion-ing engine suitable for pluralities of fuel

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CN109751149A true CN109751149A (en) 2019-05-14

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11753988B2 (en) 2018-11-30 2023-09-12 David L. Stenz Internal combustion engine configured for use with solid or slow burning fuels, and methods of operating or implementing same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11753988B2 (en) 2018-11-30 2023-09-12 David L. Stenz Internal combustion engine configured for use with solid or slow burning fuels, and methods of operating or implementing same
US12291990B2 (en) 2018-11-30 2025-05-06 David L. Stenz Internal combustion engine configured for use with solid or slow burning fuels, and methods of operating or implementing same

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Application publication date: 20190514