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SE9501962L - Combustion engine with variable compression ratio - Google Patents

Combustion engine with variable compression ratio

Info

Publication number
SE9501962L
SE9501962L SE9501962A SE9501962A SE9501962L SE 9501962 L SE9501962 L SE 9501962L SE 9501962 A SE9501962 A SE 9501962A SE 9501962 A SE9501962 A SE 9501962A SE 9501962 L SE9501962 L SE 9501962L
Authority
SE
Sweden
Prior art keywords
piston
cylinder
work
compression ratio
hydraulic
Prior art date
Application number
SE9501962A
Other languages
Swedish (sv)
Other versions
SE9501962D0 (en
SE504359C2 (en
Inventor
Christer Lindstroem
Original Assignee
Beta Maskin Ab
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 Beta Maskin Ab filed Critical Beta Maskin Ab
Priority to SE9501962A priority Critical patent/SE504359C2/en
Publication of SE9501962D0 publication Critical patent/SE9501962D0/en
Publication of SE9501962L publication Critical patent/SE9501962L/en
Publication of SE504359C2 publication Critical patent/SE504359C2/en

Links

Classifications

    • 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)
  • Valve Device For Special Equipments (AREA)

Abstract

The internal combustion (IC) engine is of the Otto or diesel type with one or more work cylinders with variable geometrical compression ratio, and incorporates, for each work cylinder, a combustion chamber formed between a work piston and a cylinder head with a movable wall for variation of the combustion chamber vol. The wall is formed by a second piston in a second cylinder communicating with the work cylinders. A drive unit is connected to the second piston, which via control components controls the second piston position in the second cylinder at least in relation to the engine crankshaft position and load. The drive unit comprises a hydraulic piston (8), which is connected with the second piston (5), and is accommodated in a hydraulic cylinder (9), which via a valve arrangement (13, 14, 15, 16) controlled by an electronic control unit (17) communicates with a pressure chamber (18) contg. hydraulic fluid and gas under excess pressure.
SE9501962A 1995-05-29 1995-05-29 IC engine with variable compression ratio SE504359C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE9501962A SE504359C2 (en) 1995-05-29 1995-05-29 IC engine with variable compression ratio

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9501962A SE504359C2 (en) 1995-05-29 1995-05-29 IC engine with variable compression ratio

Publications (3)

Publication Number Publication Date
SE9501962D0 SE9501962D0 (en) 1995-05-29
SE9501962L true SE9501962L (en) 1996-11-30
SE504359C2 SE504359C2 (en) 1997-01-20

Family

ID=20398444

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9501962A SE504359C2 (en) 1995-05-29 1995-05-29 IC engine with variable compression ratio

Country Status (1)

Country Link
SE (1) SE504359C2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE539155C2 (en) * 2015-10-07 2017-04-18 Hedman Ericsson Patent Ab Procedure for diesel engine and diesel engine for application of the procedure
SE543587C2 (en) * 2018-12-14 2021-04-06 Hedman Ericsson Patent Ab Method for producing a high exhaust temperature at engine part load in a diesel engine and apparatus for carrying out the method

Also Published As

Publication number Publication date
SE9501962D0 (en) 1995-05-29
SE504359C2 (en) 1997-01-20

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