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GB201201204D0 - Internal combustion engine - Google Patents

Internal combustion engine

Info

Publication number
GB201201204D0
GB201201204D0 GBGB1201204.3A GB201201204A GB201201204D0 GB 201201204 D0 GB201201204 D0 GB 201201204D0 GB 201201204 A GB201201204 A GB 201201204A GB 201201204 D0 GB201201204 D0 GB 201201204D0
Authority
GB
United Kingdom
Prior art keywords
piston
cylinder
cylinder block
internal combustion
combustion engine
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.)
Withdrawn
Application number
GBGB1201204.3A
Other versions
GB2498591A (en
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.)
GM Global Technology Operations LLC
Original Assignee
GM Global Technology Operations LLC
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 GM Global Technology Operations LLC filed Critical GM Global Technology Operations LLC
Priority to GB1201204.3A priority Critical patent/GB2498591A/en
Publication of GB201201204D0 publication Critical patent/GB201201204D0/en
Publication of GB2498591A publication Critical patent/GB2498591A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/02—Cylinders; Cylinder heads  having cooling means
    • F02F1/10—Cylinders; Cylinder heads  having cooling means for liquid cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/06—Arrangements for cooling pistons
    • F01P3/08—Cooling of piston exterior only, e.g. by jets
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F3/00—Pistons 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F3/00—Pistons 
    • F02F3/02—Pistons  having means for accommodating or controlling heat expansion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2251/00—Material properties
    • F05C2251/04—Thermal properties
    • F05C2251/042—Expansivity
    • F05C2251/046—Expansivity dissimilar

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)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

The invention provides an internal combustion engine 110 compris­ing a cylinder block 120 defining at least a cylinder 125, and a reciprocating piston 140 accommodated inside the cylinder 125, wherein the piston 140 is made from a material having a thermal expansion coefficient lower than a thermal expansion coeffi­cient of a material which the cylinder block 120 is made from. The piston 140 material may be steel and the cylinder block 120 material may be aluminium. As the engine warms up and the cylinder increases in length more than the piston does, thus providing a bigger gap above the piston, and the compression ratio of the cylinder will be lowered. Independent cooling systems for the piston and the cylinder block are also disclosed.
GB1201204.3A 2012-01-23 2012-01-23 Internal Combustion Engine with a Variable Compression Ratio Withdrawn GB2498591A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1201204.3A GB2498591A (en) 2012-01-23 2012-01-23 Internal Combustion Engine with a Variable Compression Ratio

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1201204.3A GB2498591A (en) 2012-01-23 2012-01-23 Internal Combustion Engine with a Variable Compression Ratio

Publications (2)

Publication Number Publication Date
GB201201204D0 true GB201201204D0 (en) 2012-03-07
GB2498591A GB2498591A (en) 2013-07-24

Family

ID=45840899

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1201204.3A Withdrawn GB2498591A (en) 2012-01-23 2012-01-23 Internal Combustion Engine with a Variable Compression Ratio

Country Status (1)

Country Link
GB (1) GB2498591A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013021612B4 (en) * 2013-12-20 2017-04-06 Audi Ag Method for operating an internal combustion engine and corresponding internal combustion engine
DE102019209168B4 (en) 2019-06-25 2023-06-29 Hyundai Motor Company PISTON ARRANGEMENT, INTERNAL COMBUSTION ENGINE AND METHOD OF VARYING A COMPRESSION RATIO OF AN INTERNAL ENGINE

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB784413A (en) * 1954-04-17 1957-10-09 Diesel Engine Company Of Texas Improvements relating to internal combustion engines
JPS5420209A (en) * 1977-07-14 1979-02-15 Honda Motor Co Ltd Cylinder for internal combustion engine
US6199519B1 (en) * 1998-06-25 2001-03-13 Sandia Corporation Free-piston engine
GB2431217A (en) * 2005-10-11 2007-04-18 Ford Global Tech Llc Piston oil spray cooling system with two nozzles
DE102009018981A1 (en) * 2009-04-25 2010-10-28 Daimler Ag Piston for internal combustion engine, has hub for bearing gudgeon pin and piston skirt and spaced from piston skirt by recesses of piston skirt, where piston skirt is formed by two circular cylinder segments
DE102009020355A1 (en) * 2009-05-07 2010-11-11 Daimler Ag Piston for reciprocating piston engine, particularly internal combustion engine, is made of steel and hub for mounting piston pin and piston skirt
DE102009048124A1 (en) * 2009-10-02 2011-04-07 Daimler Ag Steel pistons for internal combustion engines
DE102010045221B4 (en) * 2010-09-13 2017-10-05 Daimler Ag Steel pistons for internal combustion engines

Also Published As

Publication number Publication date
GB2498591A (en) 2013-07-24

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)