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WO2018122876A1 - Ensemble d'augmentation d'arrêt momentané au pmh dans un moteur à combustion - Google Patents

Ensemble d'augmentation d'arrêt momentané au pmh dans un moteur à combustion Download PDF

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Publication number
WO2018122876A1
WO2018122876A1 PCT/IN2017/050625 IN2017050625W WO2018122876A1 WO 2018122876 A1 WO2018122876 A1 WO 2018122876A1 IN 2017050625 W IN2017050625 W IN 2017050625W WO 2018122876 A1 WO2018122876 A1 WO 2018122876A1
Authority
WO
WIPO (PCT)
Prior art keywords
piston
crank
movement
tdc
plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IN2017/050625
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English (en)
Inventor
Shailendra Kumar Singh GAUR
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gaur Sangeeta Rani
Original Assignee
Gaur Sangeeta Rani
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gaur Sangeeta Rani filed Critical Gaur Sangeeta Rani
Publication of WO2018122876A1 publication Critical patent/WO2018122876A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B41/00—Engines characterised by special means for improving conversion of heat or pressure energy into mechanical power
    • F02B41/02—Engines with prolonged expansion
    • F02B41/04—Engines with prolonged expansion in main cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/36—Modified dwell of piston in TDC
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • This invention relates to the internal combustion engine. More particularly, the invention relates to improvement in the mechanism of internal combustion engine's power stroke, which imparts significant enhancement in the engine's efficiency. Such improvement is achieved with the help of a novel plate placed in an inventive way, that improves efficiency of the engine, by holding the piston's vertical movement to pre-decided degrees (targeted degrees) of the crank movement after TDC (Top Dead Center) in power stroke and this point of degree is known as shifted TDC, for maintaining constant compression ratio up to that degree movement of the crank or to maintain the volume constant for keeping constant pressure without wastage of energy that usually gets consumed to hold the piston for particular time upto targeted degree.
  • TDC Top Dead Center
  • the "sin ⁇ " or the arm of the crank-force application was improved but due to this offset the volume inside increased and pressure decreased and hence the desired result were not achieved.
  • US patent no. 5816201 displays the crankshaft mechanism of an internal combustion engine which allows for greater efficiency and increased torque. More specifically, the invention includes an offset crankshaft located such that, at a point during the power stroke, crankshaft of the crank is perpendicular to the vertical axis of the piston cylinder, and the connecting rod is substantially collin- ear with the vertical axis of the piston cylinder. Interference between the connecting rods and the pistons is prevented by setting the crankshaft far enough below the piston cylinders to create a low return stroke angle.
  • US patent no. 6058901 displays the invention which relates generally to reciprocating piston type internal combustion (I. C.) engines. More specifically it relates to such an I. C. engine in which the axes of the pistons do not intersect, i.e. are geometrically offset from, the crankshaft axis.
  • I. C. internal combustion
  • the cam were introduced with different positions with the involvement of the connecting rod so that connecting rod could hold the piston's vertical movement and the pressure inside the chamber (above piston in an engine) at constant for angular movement of the crank after TDC and these cam succeeded in holding the piston's that movement and hence maintaining that pressure why the " ⁇ " changed from zero at the starting of power stroke at TDC to desired degree also known as shifted TDC and accordingly output of power exploitation should have been improved now due to this probable positive step in the design of I C Engines but this design could not do that completely because the cams used huge amount of energy at either place for holding piston's vertical movement with respect to angular movement of the crank after TDC as they consumed substantially high amount of energy.
  • this invention is useful because it holds the complete pressure of the plate till the connecting rod is climbing the cams and releases the connecting rod just after that because the climbing force required for, is equal to p.sin(a) where 'a' is angle the force 'p' makes with the slope and it is to high in the starting due to 'a' being sufficiently high and hence saving huge amount of energy that was so far being wasted. And, hence this plate, improving the efficiency of those internal combustion engines significantly.
  • the internal combustion engines described above and known from the state of the art are displaying one or other flaws in the stroke engine system relating to efficiency as the efficiency is very low particularly in petrol and gas engines and a bit better in diesel engines comparatively. And for that the design of the engine is responsible because combustion is complete and perfect and now wastage for any defect has been rectified. And the design rectification was not possible because for that the angle theta at exploitation was to improve to improve arm for force application while pressure to remain maximum. And pressure can remain at maximum only if piston's vertical movement is stopped with respect to angular movement of the crank in getting that ' ⁇ '.
  • the provision or the parts used to serve the purpose of holding the piston at desired degrees uses substantial amount of energy for holding piston's vertical movement with respect to angular movement of the crank after TDC, therefore, fails to exploit complete benefits of holding the piston movement upto desired degrees or shifted TDC, that targeted benefit could not be converted into actual results because, for making the vertical movement of the piston zero or in other words by holding piston's vertical movement from TDC to shifted TDC for certain degrees of the crank's circular movement, the power generated inside piston and head, is lost or consumed for holding the piston at the TDC position. And thus the targeted benefits are lost in balancing forces of saved energy from generated power and energy used for holding piston's vertical movement.
  • the present invention is proposed to solve the above mentioned problems related to energy wastage and unnecessary fuel consumption in the power stroke of such engines, in an economic and highly efficient manner.
  • the first object of the invention is to improve the efficiency of the existing internal combustion engines having the mechanism of holding the vertical movement of the piston from TDC to shifted TDC for certain degrees with respect to angular movement of the crank after TDC in power stroke.
  • the invention presents the provision of a plate assembly or efficiency enhancing plate assembly, for such engines, herein the plate constructed and arranged in a way, that it would be able to hold the vertical movement of the piston so that it can stand at it's position at TDC for certain degrees of the crank's circular movement upto shifted TDC without using the energy from the piston's or engines previous cycle, thus saving the energy which would convert the targeted benefits in to the actual results.
  • This invention of efficiency enhancing plate assembly arranged in the internal combustion engine in way that, relates to the saving of the targeted benefits that could not be converted into actual results, by making the vertical movement of the piston zero after TDC or by holding piston's vertical movement for certain targeted degrees of crank's angular movement so that up to that targeted degrees of shifted TDC, the pressure inside chamber is not decreased due to angular movement of the crank up to those degrees because otherwise the piston would come down due to this angular movement of the crank naturally and the volume inside the chamber will increase and the pressure will decrease due to which the energy will be lost.
  • Fig. 1 is perspective view of the efficiency enhancing plate to hold the power or pressure of the piston up to the desired or targeted degrees after TDC for the fall of the piston due to angular movement of the crank, according to the preferred embodiment of the present invention
  • Fig. 2 shows the piece which has a hole with the help of which it will be fitted in the plate, according to the preferred embodiment of the present invention
  • Fig. 3 shows upper portion of the connecting rod with a hole at which a pin will be inserted so that it will move on the slope of the pieces and a hole in which piston will be fitted, according to the preferred embodiment of the present invention
  • Fig. 4 shows pin which will be placed inside the hole of the connecting rod and will move on the slope of pieces for bearing the pressure of the connecting rod due to forces of combustion at the top of piston in the chamber, according to the preferred embodiment of the present invention
  • Fig. 5 shows the fitting of all the parts of plate in the internal combustion engine of that type where piston attached to the connecting rod with a hole, according to the preferred embodiment of the present invention
  • Fig. 6 shows the assembly of parts and fitting in 3D form, according to the preferred embodiment of the present invention
  • Fig. 7 shows the angle theta ( ⁇ ) and the arm of the crank or the sin value of the theta, the angle phi ( ⁇ ), shifted TDC, the original TDC according to the preferred embodiment of the present invention
  • Fig. 8 shows the position of spring below the pieces, according to the preferred embodiment of the present invention.
  • Fig. 9 shows the place and hole for the fitting of pieces in the plate, according to the preferred embodiment of the present invention
  • Fig. 10 shows the passing of pin through the gap in the plate before coming upon the pieces and again passing through next gap in plate, according to the preferred embodiment of the present invention
  • Fig. 11 shows the position of both pieces in the plate without any movement according to the preferred embodiment of the present invention
  • Fig. 12 shows the movement of the pieces which will be due to passing of the pin at targeted degree and it will be brought back to its original position by a spring given below it, according to the preferred embodiment of the present invention
  • Fig. 13 shows the pin of the connecting rod standing upon the pieces, according to the preferred embodiment of the present invention.
  • the present invention contemplates to provide a plate assembly or efficiency enhancing plate assembly, for such internal combustion engines which would have provision to hold the piston's vertical movement from TDC for certain degrees with respect to circular movement of the crank after TDC in power stroke and the pressure inside the chamber (above piston in an engine) is constant for angular movement of the crank after TDC so that volume could be made constant to check the fall of the pressure inside chamber in reaching targeted degree for exploitation of thermal energy, herein the plate constructed and arranged in a way, that it can hold the vertical movement of the piston so that it can stand at TDC position for certain degrees of the crank's circular movement without using the energy from the piston's previous cycle in climbing the cam's slop, thus saving the energy, which would convert the targeted benefits in to the actual results.
  • the targeted degree is 80° up to which someone wish to hold the vertical movement of the piston after TDC in power stroke so that arm for driving force of the crank or the angle theta ( ⁇ ) of the crank movement after TDC is increased so that the power generated could be increased with the help of cam and then the piston is released.
  • the Efficiency Enhancing Plate will hold the piston from TDC to the 80° of the crank's circular or angular movement for climbing of the con rod the slope of the cam and when cam is again smooth at the 80°, the connecting rod will be released and the piston will start it's vertical movement and so the piston will start pressing crank to rotate after 80° degree of crank movement after TDC in power stroke and thus the power stroke will start from the 80° and at that time the available arm will be 98% of the cranks radius or the driving force will be 98% of the pressure inside the chamber and the 'p' for being equal to fcos > also will be 99% approx of the force generated inside by combustion because the angel ' ⁇ ' will be hardly 2° and it will not be consumed by climbing of the connecting rod on the cam's slop in the next cycle and huge surplus work-done is saved.
  • the efficiency of the internal combustion engine has always been a point of concern for so many and due to that many effort had been made by so many inventors but for very small results and so for neither design of the I C Engine has been able to translate the maximum energy of the fuel combustion into the mechanical energy and so far the petrol and diesel engines are approx 26% and die- sel's a bit more efficient.
  • the basic reason for this in-efficiency was one fact inherent in the I C Engine from very inception of it and that is that the energy of fuel after combustion is in the form of pressure inside the chamber after ignition in the power stoke and above the piston and that pressure pushes the piston downward and this linear movement of the piston is converted into angular movement by the crank so that the process becomes reciprocal and again and again same process start to happen.
  • the driving force that is generated due to linear pressure exerted by the piston is equal to "psinO", where p is the cos factor of the pressure or force 'f inside the chamber depending upon the ' ⁇ ' angle, the crank pin as point of pressure made with the vertical axis of piston's movement due to combustion force and " ⁇ " is the angle the crank pinion point for connecting rod at the crank center is making from TDC after cranks movement from the TDC position and the sin values of any degree are in the increasing order that means zero for zero degree and one (1) for 90 degrees.
  • the piston after ignition in the power stroke has huge pressure inside the chamber above itself and for holding the piston's vertical movement after TDC in power stroke needs cam which gives connecting rod a lift in proportion to the fall of the piston in a normal engine due to crank's movement from TDC onwards in power stroke. And this lift is achieved by climbing of connecting rod the slope of the cam so that the piston stands unmoved and it's linear movement up to that targeted degrees is zero. But for climbing this slop of the cam by connecting rod needs huge energy in proportion to the huge pressure present at the top of the piston inside the chamber and this will be equal to psin(a).
  • This invention relates to the improving efficiency of those internal combustion engines which holds the piston's vertical movement for some degrees angular movement of the crank after TDC in order to improve the efficiency of the internal combustion engine and uses cams for this purpose.
  • the efficiency enhancing plate assembly of present invention as shown in Figure- 1 and Figure-8, comprises of parts known as a metal plate (8) with a particular design and two pieces of moving small metal pieces known as piece or pieces (11) as shown in Figure-2, a connecting rod and two springs and screws.
  • Figure-1 shows a plate (8) to hold the power or pressure of the piston up to the desired or targeted degrees after TDC for the fall of the piston due to angular movement of the crank.
  • This plate again shows two holes (1), two holes (4) and two holes (7), these holes are for the purpose of plate being fitted below the block or combustion chamber and above the crank case in single cylinder engine (similarly it could be designed for other engines to serve the preferred purpose of the present invention) or it could be incorporated with the engine structure or crank-case with the preferred embodiment of the present invention.
  • gap (2) (as can be seen in figure-1 & figure- 10) for the passing of the connecting rod (14), gap (3) (as can be seen in figure-1 & figure-10) for the passing of the connecting pin (17), a space (9) (as can be seen in figure-1 & figure-11) for spring that will be pushing back piece (11) at point (13) after the movement of the pieces due to passing of the pin (17) (as can be seen in figure-10), the gap (5) is for the passing of timing chain or any guide for opening and closing of valves, and holes (6) (as can be seen in figure-9) for holding moving pieces (11) of metal on the plate (8).
  • Figure-2- illustrates the piece (11) which has a hole (10) with the help of which it will be fitted in the plate at hole (6) (as can also be seen in figure-9) with the help of screw, a pin (13) which will be pushed back by spring placed in space (9) and a slope (12) for the running of the pin (17) (as can also be seen in figure-10) which will be fitted in the upper part of the connecting rod (14) at hole (15).
  • Figure-3- illustrates upper portion of the connecting rod (14) with a hole (15) at which a pin (17) will be inserted so that it will move on the slope (12) of the pieces (11) and a hole (16) in which piston will be fitted.
  • the rest part of the connecting rod will depend on the design of the engine using this plate (8).
  • Figure-4- illustrates pin (17) which will be placed inside the hole (15) of the connecting rod (14) and will move on the slope (12) of pieces (11) for bearing the pressure of the connecting rod (14) due to forces of combustion at the top of piston in the chamber and other wise this pressure would have been detrimental to the efficiency improving effort.
  • Figure-5- illustrates the fitting of all the parts of plate (8) in the internal combustion engine of that type where piston (20) attached to the connecting rod (14) with a hole (16).
  • the plate (8) will hold the vertical movement of piston for some desired or targeted degrees after climbing piece slop (12) with the help of pin (17) and plate (8) is placed in between the crank-case (21) and the chamber or block (19) or even it could also be incorporated at same position with the crank case in place of inserting separately.
  • Figure-6- illustrates the assembly of parts and fitting with plate (8) in 3D form. It shows the fitting of all the parts of plate (8) in the internal combustion engine of that type where piston (20) attached to the connecting rod (14) with a hole (16).
  • the plate (8) will hold the vertical movement of piston for some desired degrees after climbing piece slop (12) with the help of pin (17) and plate F(8) is placed in between the crankcase (21) and the chamber (19).
  • Figure -7- explains angle '6' at (18) and corresponding arm at (22) and angle ' ⁇ ' at (23), TDC at (24) and shifted TDC at (25).
  • the efficiency enhancing plate (8) of the present invention is inserted in between the piston and crank as shown in figure 6 -point-8.
  • This plate holds the connecting rod after TDC up to the targeted degree or in particular case up to 60° and the pressure of the piston will not consume the huge amount of the energy in maintaining the height of the piston or holding the vertical movement of the piston with respect to the angular movement of the crank.
  • the connecting rod is released at the targeted degree so that there from the connecting rod starts rotating crank by exerting force of piston's pressure.
  • huge amount of energy which was wasted is saved and hence the engines becomes highly efficient and this plate work for enhancing the efficiency by saving the energy.
  • This plate can be incorporated with the crank case and hence it will not need changes in the size of the chamber or crank case.
  • the plate will give liberty to explore the power in power stroke from any degree of the crank movement as per target and desire so that to explore maximum arm of the crank for maximum pressure combination results.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transmission Devices (AREA)

Abstract

La présente invention concerne un moteur à combustion interne. Plus particulièrement, l'invention concerne l'amélioration du mécanisme du moteur à course motrice à combustion interne, permettant une augmentation significative de l'efficacité de combustion du combustible. Ladite amélioration est obtenue à l'aide d'une nouvelle plaque placée de manière créative et qui améliore l'efficacité du moteur, par retenue du déplacement vertical du piston à certains degrés prédéfinis (degrés ciblés) du déplacement de la manivelle après le PMH (Point Mort Haut) pendant une course motrice, afin de maintenir un rapport de compression constant jusqu'audit degré de déplacement de la manivelle ou de maintenir le volume constant afin de garder une pression constante sans la perte d'énergie habituellement consommée pour retenir le piston à un degré ciblé pendant un certain temps.
PCT/IN2017/050625 2016-12-29 2017-12-28 Ensemble d'augmentation d'arrêt momentané au pmh dans un moteur à combustion Ceased WO2018122876A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN201611044798 2016-12-29
IN201611044798 2016-12-29

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Publication Number Publication Date
WO2018122876A1 true WO2018122876A1 (fr) 2018-07-05

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB200704A (en) * 1922-07-17 1923-07-19 Henry Briggs Improvements in and relating to the driving mechanism of internal combustion engines
US1873908A (en) * 1929-09-13 1932-08-23 Stanley Hopkins Diesel engine
DE2734715A1 (de) * 1977-08-02 1979-02-22 Scherf Geb Kindermann Eva Hubkolbenmotor
US4463710A (en) * 1981-12-07 1984-08-07 Mcwhorter Edward M Engine connecting rod and piston assembly
WO1991019087A1 (fr) * 1990-05-30 1991-12-12 Routery Edward E Ensemble bielle-piston
US5816201A (en) 1997-07-07 1998-10-06 Garvin; Edward A. Offset crankshaft mechanism for an internal combustion engine
US6058901A (en) 1998-11-03 2000-05-09 Ford Global Technologies, Inc. Offset crankshaft engine
US7373915B1 (en) * 2006-09-26 2008-05-20 Joniec Alexander F Motion control mechanism for a piston engine
US9194287B1 (en) * 2014-11-26 2015-11-24 Bernard Bon Double cam axial engine with over-expansion, variable compression, constant volume combustion, rotary valves and water injection for regenerative cooling

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB200704A (en) * 1922-07-17 1923-07-19 Henry Briggs Improvements in and relating to the driving mechanism of internal combustion engines
US1873908A (en) * 1929-09-13 1932-08-23 Stanley Hopkins Diesel engine
DE2734715A1 (de) * 1977-08-02 1979-02-22 Scherf Geb Kindermann Eva Hubkolbenmotor
US4463710A (en) * 1981-12-07 1984-08-07 Mcwhorter Edward M Engine connecting rod and piston assembly
WO1991019087A1 (fr) * 1990-05-30 1991-12-12 Routery Edward E Ensemble bielle-piston
US5816201A (en) 1997-07-07 1998-10-06 Garvin; Edward A. Offset crankshaft mechanism for an internal combustion engine
US6058901A (en) 1998-11-03 2000-05-09 Ford Global Technologies, Inc. Offset crankshaft engine
US7373915B1 (en) * 2006-09-26 2008-05-20 Joniec Alexander F Motion control mechanism for a piston engine
US9194287B1 (en) * 2014-11-26 2015-11-24 Bernard Bon Double cam axial engine with over-expansion, variable compression, constant volume combustion, rotary valves and water injection for regenerative cooling

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