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GB1516982A - Reciprocating piston heat engines - Google Patents

Reciprocating piston heat engines

Info

Publication number
GB1516982A
GB1516982A GB2783274A GB2783274A GB1516982A GB 1516982 A GB1516982 A GB 1516982A GB 2783274 A GB2783274 A GB 2783274A GB 2783274 A GB2783274 A GB 2783274A GB 1516982 A GB1516982 A GB 1516982A
Authority
GB
United Kingdom
Prior art keywords
junkhead
cylinder
piston
engine
port
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.)
Expired
Application number
GB2783274A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB2783274A priority Critical patent/GB1516982A/en
Publication of GB1516982A publication Critical patent/GB1516982A/en
Expired legal-status Critical Current

Links

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
    • 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
    • F02B75/00—Other engines
    • F02B75/04—Engines with variable distances between pistons at top dead-centre positions and cylinder heads
    • F02B75/041—Engines with variable distances between pistons at top dead-centre positions and cylinder heads by means of cylinder or cylinderhead positioning
    • F02B75/042—Engines with variable distances between pistons at top dead-centre positions and cylinder heads by means of cylinder or cylinderhead positioning the cylinderhead comprising a counter-piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D15/00—Varying compression ratio
    • F02D15/04—Varying compression ratio by alteration of volume of compression space without changing piston stroke

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)

Abstract

1516982 Variable compression ratio engines R T JONES 15 Sept 1975 [22 June 1974] 27832/74 Heading F1B In a reciprocating piston combustion engine a junkhead 10 is provided which is driven via a rocker 15 or cam-shaft pivoted on an eccentric bearing 13 which is linked to an engine throttle valve actuating member so that the compression ratio is varied with throttle valve opening during engine operation. The compression ratio is arranged to increase as the throttle valve opening is reduced. In Fig. 1 (not shown), a two stroke engine has an inlet port (23) controlled by a disc valve (22). Combustible mixture is induced through the port (23) by the piston 24 and is compressed during the piston's working stroke. After opening of exhaust ports 25, junkhead 10 is raised by the cam 20 to open the transfer ports 19 to admit compressed combustible mixture to the cylinder. The ports 19 are closed again after a short time and the mixture is compressed in the cylinder and is ignited just after TDC. The junkhead 10 continues to move down the cylinder after ignition to keep the combustion volume constant until maximum pressure and temperature of the burning gases is reached. The junkhead then remains stationary until after BDC when the exhaust ports are about to be closed. The cam 20 then makes the junkhead rise rapidly so that the depression created in the cylinder helps the flow of mixture through the transfer ports 19. In Fig. 8 the invention is applied to a radial cylinder two stroke engine, and in Fig. 9 is shown a four stroke engine in which both the piston 24 and junkhead 10 are situated inside a rotating sleeve valve 36 which has a port 38 to control both inlet port 23 and exhaust port 25. Instead of the full length rotating sleeve, a sleeve just long enough to cover the junkhead may be provided, driven from the top of the cylinder. The invention may be applied to side valve engines and to spark ignition or compression ignition engines.
GB2783274A 1975-09-15 1975-09-15 Reciprocating piston heat engines Expired GB1516982A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2783274A GB1516982A (en) 1975-09-15 1975-09-15 Reciprocating piston heat engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2783274A GB1516982A (en) 1975-09-15 1975-09-15 Reciprocating piston heat engines

Publications (1)

Publication Number Publication Date
GB1516982A true GB1516982A (en) 1978-07-05

Family

ID=10266035

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2783274A Expired GB1516982A (en) 1975-09-15 1975-09-15 Reciprocating piston heat engines

Country Status (1)

Country Link
GB (1) GB1516982A (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2483011A1 (en) * 1980-05-22 1981-11-27 Mallor Deydier De Pierre Feu C Variable combustion volume IC-engine - has movable opposed piston on screw connected to crankshaft
EP0048784A2 (en) * 1980-09-26 1982-04-07 Natale Billitteri High efficiency alternating endothermic engine with a new thermodynamic cycle
EP0128539A2 (en) * 1983-06-13 1984-12-19 Michael Dr.-Ing. Schyma Four-stroke process for the operation of an internal-combustion engine with auxiliary pistons, and engine therefor
FR2567574A2 (en) * 1980-05-22 1986-01-17 Mallor Deydier De Pierrefeu Ch Variation of the cylinder head volume of a four-stroke heat engine by regular actuation of the cylinder head piston at half the speed of the engine piston
GB2376503A (en) * 2001-04-27 2002-12-18 Martin Leonard Stanley Flint Automatically variable compression ratio device with adjustable cylinder head portion
WO2009152592A1 (en) * 2008-06-17 2009-12-23 Proenca Luiz Carlos Leite Internal combustion engine with working, piston and control piston
WO2011023195A1 (en) * 2009-08-24 2011-03-03 Soeberg Jesper Cylinder block with injection and ejection piston
WO2012048309A1 (en) * 2010-10-08 2012-04-12 Pinnacle Engines, Inc. Internal combustion engine valve actuation and adjustable lift and timing
WO2012048279A1 (en) * 2010-10-08 2012-04-12 Pinnacle Engines, Inc. Single piston sleeve valve with optional variable compression ratio capability
EP2724010A2 (en) * 2011-06-27 2014-04-30 Pinnacle Engines, Inc. Enhanced efficiency and pollutant control by multi-variable engine operation control
US8776739B2 (en) 2010-10-08 2014-07-15 Pinnacle Engines, Inc. Internal combustion engine valve actuation and adjustable lift and timing
US9206749B2 (en) 2009-06-04 2015-12-08 Pinnacle Engines, Inc. Variable compression ratio systems for opposed-piston and other internal combustion engines, and related methods of manufacture and use
US9316150B2 (en) 2012-07-02 2016-04-19 Pinnacle Engines, Inc. Variable compression ratio diesel engine
US9650951B2 (en) 2010-10-08 2017-05-16 Pinnacle Engines, Inc. Single piston sleeve valve with optional variable compression ratio capability
US9745915B2 (en) 2006-04-18 2017-08-29 Pinnacle Engines, Inc Internal combustion engine

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2567574A2 (en) * 1980-05-22 1986-01-17 Mallor Deydier De Pierrefeu Ch Variation of the cylinder head volume of a four-stroke heat engine by regular actuation of the cylinder head piston at half the speed of the engine piston
FR2483011A1 (en) * 1980-05-22 1981-11-27 Mallor Deydier De Pierre Feu C Variable combustion volume IC-engine - has movable opposed piston on screw connected to crankshaft
EP0048784A2 (en) * 1980-09-26 1982-04-07 Natale Billitteri High efficiency alternating endothermic engine with a new thermodynamic cycle
EP0048784A3 (en) * 1980-09-26 1982-09-29 Natale Billitteri High efficiency alternating endothermic engine with a new thermodynamic cycle
EP0128539A2 (en) * 1983-06-13 1984-12-19 Michael Dr.-Ing. Schyma Four-stroke process for the operation of an internal-combustion engine with auxiliary pistons, and engine therefor
EP0128539A3 (en) * 1983-06-13 1986-07-23 Michael Dr.-Ing. Schyma Four-stroke process for the operation of an internal-combustion engine with auxiliary pistons, and engine therefor
GB2376503A (en) * 2001-04-27 2002-12-18 Martin Leonard Stanley Flint Automatically variable compression ratio device with adjustable cylinder head portion
US9745915B2 (en) 2006-04-18 2017-08-29 Pinnacle Engines, Inc Internal combustion engine
WO2009152592A1 (en) * 2008-06-17 2009-12-23 Proenca Luiz Carlos Leite Internal combustion engine with working, piston and control piston
US9206749B2 (en) 2009-06-04 2015-12-08 Pinnacle Engines, Inc. Variable compression ratio systems for opposed-piston and other internal combustion engines, and related methods of manufacture and use
WO2011023195A1 (en) * 2009-08-24 2011-03-03 Soeberg Jesper Cylinder block with injection and ejection piston
CN103228877A (en) * 2010-10-08 2013-07-31 品纳科动力有限公司 Internal combustion engine valve actuation and adjustable lift and timing
US8776739B2 (en) 2010-10-08 2014-07-15 Pinnacle Engines, Inc. Internal combustion engine valve actuation and adjustable lift and timing
WO2012048279A1 (en) * 2010-10-08 2012-04-12 Pinnacle Engines, Inc. Single piston sleeve valve with optional variable compression ratio capability
US9650951B2 (en) 2010-10-08 2017-05-16 Pinnacle Engines, Inc. Single piston sleeve valve with optional variable compression ratio capability
WO2012048309A1 (en) * 2010-10-08 2012-04-12 Pinnacle Engines, Inc. Internal combustion engine valve actuation and adjustable lift and timing
EP2724010A2 (en) * 2011-06-27 2014-04-30 Pinnacle Engines, Inc. Enhanced efficiency and pollutant control by multi-variable engine operation control
US9316150B2 (en) 2012-07-02 2016-04-19 Pinnacle Engines, Inc. Variable compression ratio diesel engine

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee