GB739740A - Improvements in and relating to spark-fired internal combustion engines - Google Patents

Improvements in and relating to spark-fired internal combustion engines

Info

Publication number
GB739740A
GB739740A GB25728/53A GB2572853A GB739740A GB 739740 A GB739740 A GB 739740A GB 25728/53 A GB25728/53 A GB 25728/53A GB 2572853 A GB2572853 A GB 2572853A GB 739740 A GB739740 A GB 739740A
Authority
GB
United Kingdom
Prior art keywords
engine
valve
pressure
load
air
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
GB25728/53A
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
Publication of GB739740A publication Critical patent/GB739740A/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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
    • F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
    • F02D13/028—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation for two-stroke engines
    • 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
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
    • F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
    • F02D13/0223—Variable control of the intake valves only
    • F02D13/0234—Variable control of the intake valves only changing the valve timing only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
    • F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
    • F02D13/0242—Variable control of the exhaust valves only
    • F02D13/0249—Variable control of the exhaust valves only changing the valve timing only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
    • F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
    • F02D13/0269—Controlling the valves to perform a Miller-Atkinson cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
    • F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
    • F02D13/0276—Actuation of an additional valve for a special application, e.g. for decompression, exhaust gas recirculation or cylinder scavenging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • 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
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
    • 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
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
    • 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
    • F02B2275/32—Miller cycle
    • 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
    • F02B2700/00—Measures relating to the combustion process without indication of the kind of fuel or with more than one fuel
    • F02B2700/02—Four stroke engines
    • F02B2700/023—Four stroke engines with measures for charging, increasing the power
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2700/00—Mechanical control of speed or power of a single cylinder piston engine
    • F02D2700/02—Controlling by changing the air or fuel supply
    • F02D2700/0202—Controlling by changing the air or fuel supply for engines working with gaseous fuel, including those working with an ignition liquid
    • F02D2700/0215—Controlling the fuel supply
    • 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

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)
  • Supercharger (AREA)

Abstract

739,740. Regulating; cycles; cylinders. MILLER, R. Sept. 17, 1953 [Sept. 23, 1952], No. 25728/53. Classes 7(2) and 7(6). A spark ignition engine comprises means for supplying fuel to the cylinders at a rate which increases with engine load and automatic control means for varying the effective compression ratio, i.e. the ratio of maximum compression pressure on each cycle to the pressure of the charge at the first instant that all the cylinder valves are closed, directly in accordance with engine load, the effective compression ratio at full load being substantially less than the expansion ratio and the fuel-air ratio being maintained substantially constant. In a four stroke gas engine, Figs. 1 and 2, the supply of gas to the engine cylinders through a pipe 26 is controlled according to engine load by a valve 55 controlled by an engine driven governor 54 and the time of closing of the air inlet valve 4, Fig. 1, supplied with air under pressure through a manifold 24 by an exhaust driven turbine 30, Fig. 2, whose output increases as engine load increases, is varied by a device 42 actuated by inlet manifold pressure so that the valve 4 closes progressively later in the suction stroke as the load increases, thereby varying the effective compression ratio in accordance with load. The device 42 comprises a spring-loaded piston 44 subjected to inlet manifold pressure and actuating through a rack and pinion 47, 48 an eccentric 50 which moves a cam roller 15 transversely of the inlet valve cam 17 to vary the inlet valve timing. The compressed air from the blower 30 is passed through a cooler Z and the gas supply manifold 26 is provided with a pressure reduction valve 58, separate adjusting valves 57 being provided on the individual branches of the manifold. The pressure-responsive device 42 may be replaced by an engine-driven governor. In a modification the variation in the effective compression ratio is obtained by arranging that the inlet valve remains open for a varying period at the beginning of the compression stroke so that part of the charging air is forced back into the inlet pipe. Alternatively the excess charging air may be discharged through the exhaust valve or a separate discharge valve and in a two-stroke engine the time of closing of the exhaust ports is varied to vary the effective compression ratio.
GB25728/53A 1952-09-23 1953-09-17 Improvements in and relating to spark-fired internal combustion engines Expired GB739740A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US328854XA 1952-09-23 1952-09-23

Publications (1)

Publication Number Publication Date
GB739740A true GB739740A (en) 1955-11-02

Family

ID=21867368

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25728/53A Expired GB739740A (en) 1952-09-23 1953-09-17 Improvements in and relating to spark-fired internal combustion engines

Country Status (2)

Country Link
CH (1) CH328854A (en)
GB (1) GB739740A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2122251A (en) * 1982-05-25 1984-01-11 Ford Motor Co Variable effective compression ratio internal combustion engine
GB2123083A (en) * 1982-03-31 1984-01-25 Lorne Hudson Smith Reduced intake valve opening in four-stroke engines
GB2219040A (en) * 1988-05-25 1989-11-29 Jeremy Fox I.C. engine cylinder head
US10036336B2 (en) 2006-09-08 2018-07-31 Hawar Technologies Limited Apparatus to improve the efficiency of internal combustion engines, and method therefor
CN110513201A (en) * 2018-05-22 2019-11-29 马自达汽车株式会社 Design method, compression ignition formula engine and its control device of the control logic of compression ignition formula engine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT3205U1 (en) * 1998-11-05 1999-11-25 Avl List Gmbh METHOD FOR OPERATING A 4-STROKE IGNITION COMBUSTION ENGINE WITH INDIRECT FUEL INJECTION

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2123083A (en) * 1982-03-31 1984-01-25 Lorne Hudson Smith Reduced intake valve opening in four-stroke engines
GB2122251A (en) * 1982-05-25 1984-01-11 Ford Motor Co Variable effective compression ratio internal combustion engine
GB2219040A (en) * 1988-05-25 1989-11-29 Jeremy Fox I.C. engine cylinder head
US10036336B2 (en) 2006-09-08 2018-07-31 Hawar Technologies Limited Apparatus to improve the efficiency of internal combustion engines, and method therefor
CN110513201A (en) * 2018-05-22 2019-11-29 马自达汽车株式会社 Design method, compression ignition formula engine and its control device of the control logic of compression ignition formula engine

Also Published As

Publication number Publication date
CH328854A (en) 1958-03-31

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