GB1232238A – Variable compression ratio pistons in an internal combustion engine
– Google Patents
GB1232238A – Variable compression ratio pistons in an internal combustion engine
– Google Patents
Variable compression ratio pistons in an internal combustion engine
Info
Publication number
GB1232238A
GB1232238A
GB3443568A
GB3443568A
GB1232238A
GB 1232238 A
GB1232238 A
GB 1232238A
GB 3443568 A
GB3443568 A
GB 3443568A
GB 3443568 A
GB3443568 A
GB 3443568A
GB 1232238 A
GB1232238 A
GB 1232238A
Authority
GB
United Kingdom
Prior art keywords
chamber
oil
discharge
valve
leakage
Prior art date
1967-07-20
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
GB3443568A
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.)
Teledyne Inc
Original Assignee
Teledyne Inc
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.)
1967-07-20
Filing date
1968-07-19
Publication date
1971-05-19
1968-07-19
Application filed by Teledyne Inc
filed
Critical
Teledyne Inc
1971-05-19
Publication of GB1232238A
publication
Critical
patent/GB1232238A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
F02B75/00—Other engines
F02B75/04—Engines with variable distances between pistons at top dead-centre positions and cylinder heads
F02B75/044—Engines with variable distances between pistons at top dead-centre positions and cylinder heads by means of an adjustable piston length
Abstract
1,232,238. Pistons. CONTINENTAL AVIATION & ENG. CORP. 19 July, 1968 [20 July, 1967], No. 34435/68. Heading F2T. A variable compression ratio piston in an I.C. engine comprises outer and inner relatively movable members 12, 14 defining first and second chambers 30, 32 which vary oppositely in volume in response to movement of the members, the first chambers being arranged to discharge into the second chamber at a predetermined pressure and into the crank case through a secondary discharge 118 upon a greater predetermined pressure. Oil is fed to the chamber 30 via the connecting rod, an oil collector 47 and a triangular-shaped non-return valve plate 88. An orifice 126 controls leakage of oil from the chamber 32, the leakage permitting the outer member 12 of the piston to move upwardly a small distance on each engine cycle. When the gas pressure exceeds the upper limit a discharge valve 106 lifts to pass oil into the chamber 32 via a non-return ball valve 66. The secondary discharge 118 is controlled by a needle valve 116 carried by a plate 120 and set to open against the action of a spring 122 to allow rapid discharge of oil and downward movement of the outer member 12 relative to the inner when the gas pressure is suddenly increased. In a modification, Figs. 3 and 4 (not shown), the discharge valve at the chamber 30 is combined with the non-return valve for the chamber 32, the secondary discharge passage (238) being arranged between the valve members to discharge the volume of oil in excess of that required by the chamber (32) when the gas pressure exceeds the predetermined value; the leakage of oil from the chamber (32) is controlled by an orifice (240).
GB3443568A
1967-07-20
1968-07-19
Variable compression ratio pistons in an internal combustion engine
Expired
GB1232238A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US654803A
US3403662A
(en)
1967-07-20
1967-07-20
Variable compression ratio piston assembly
Publications (1)
Publication Number
Publication Date
GB1232238A
true
GB1232238A
(en)
1971-05-19
Family
ID=24626301
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB3443568A
Expired
GB1232238A
(en)
1967-07-20
1968-07-19
Variable compression ratio pistons in an internal combustion engine
Country Status (3)
Country
Link
US
(1)
US3403662A
(en)
DE
(1)
DE1751703C3
(en)
GB
(1)
GB1232238A
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
WO2006072208A1
(en)
*
2005-01-04
2006-07-13
Xiping Wang
A positive-displacement engine
Families Citing this family (8)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3656412A
(en)
*
1969-07-28
1972-04-18
Cummins Engine Co Inc
Variable compression ratio piston
US3667433A
(en)
*
1970-06-01
1972-06-06
Teledyne Ind
Variable compression ratio piston including oil filter means
US3704695A
(en)
*
1970-07-02
1972-12-05
Teledyne Ind
Valve construction for variable compression ratio piston
DE3416346A1
(en)
*
1984-05-03
1985-11-07
Mahle Gmbh, 7000 Stuttgart
Piston with adjustable compression height for combustion engines
DE3642524C1
(en)
*
1986-12-12
1987-07-23
Daimler Benz Ag
Device for controlling the oil supply in a control chamber of a piston with variable compression height
US4934347A
(en)
*
1987-06-18
1990-06-19
Nissan Motor Co., Ltd.
Variable compression piston arrangement for internal combustion engine
CN105508046B
(en)
*
2016-01-20
2017-12-15
吉林大学
A kind of variable-compression-ratio piston
DE102018210265B4
(en)
2018-06-25
2022-04-21
Ford Global Technologies, Llc
Pistons for an internal combustion engine and method for operating an internal combustion engine with such a piston
Family Cites Families (9)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US2573688A
(en)
*
1947-11-26
1951-11-06
Butler Frank David
Internal-combustion engine variable combustion chamber
US2573689A
(en)
*
1947-12-12
1951-11-06
Butler Frank David
Internal-combustion engine variable combustion chamber
US2910826A
(en)
*
1952-11-11
1959-11-03
British Internal Combust Eng
Turbo-charged internal combustion engines
US3161112A
(en)
*
1963-06-26
1964-12-15
Continental Aviat & Eng Corp
Speed compensated variable compression ratio piston and valve
US3185138A
(en)
*
1963-06-26
1965-05-25
Continental Aviat & Eng Corp
Pressure regulating piston and valve
US3185137A
(en)
*
1963-06-26
1965-05-25
Continental Aviat & Eng Corp
Valve mounting and sealing structure
US3156162A
(en)
*
1963-06-26
1964-11-10
Continental Aviat & Eng Corp
Variable compression ratio piston
US3303831A
(en)
*
1964-09-02
1967-02-14
Clarence A Sherman
Variable compression ratio piston and valve
US3311096A
(en)
*
1965-07-07
1967-03-28
Continental Aviat & Eng Corp
Variable compression ratio piston and valve
1967
1967-07-20
US
US654803A
patent/US3403662A/en
not_active
Expired – Lifetime
1968
1968-07-15
DE
DE1751703A
patent/DE1751703C3/en
not_active
Expired
1968-07-19
GB
GB3443568A
patent/GB1232238A/en
not_active
Expired
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
WO2006072208A1
(en)
*
2005-01-04
2006-07-13
Xiping Wang
A positive-displacement engine
Also Published As
Publication number
Publication date
DE1751703A1
(en)
1971-04-29
US3403662A
(en)
1968-10-01
DE1751703B2
(en)
1978-01-12
DE1751703C3
(en)
1978-10-05
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Legal Events
Date
Code
Title
Description
1972-05-24
PS
Patent sealed [section 19, patents act 1949]
1988-08-17
PE20
Patent expired after termination of 20 years
