Internal combustion engine

Details Internal combustion engine Internal combustion engine

1994-08-04

1996-01-23

Nelli, Raymond A.

Internal-combustion engines

Engine speed regulator

Responsive to deceleration mode

F02D 1304

Patent

active

054858194

ABSTRACT:
An internal combustion engine has an engine-braking master piston for a first cylinder actuated by a first rocker arm which, in turn, is actuated by the inlet push rod of another cylinder and an exhaust-gas-recirculation master piston is provided which is actuated by a second rocker arm which, in turn, is actuated by the exhaust push rod of another cylinder. An oil passage selector valve is provided for selectively switching over the hydraulic pressures produced by the engine-braking master piston and exhaust-gas-recirculation master piston to an oil passage to actuate a slave piston and open an exhaust valve of the first cylinder. To effect engine braking, the exhaust valve of the first cylinder opens as the piston is near its top dead center position at the end of the compression stroke or at the beginning of the expansion stroke. To effect exhaust-gas-recirculation, the exhaust valve of the first cylinder opens as the piston is near the end of its suction stroke and part of the high pressure exhaust gases from the other cylinder flow back into the first cylinder.

REFERENCES:
patent: 3439662 (1969-04-01), Jones et al.
patent: 4316437 (1982-02-01), Bertrand
patent: 4384558 (1983-05-01), Johnson
patent: 4423712 (1984-01-01), Mayne et al.
patent: 4475500 (1984-10-01), Bostelman
patent: 4741307 (1988-05-01), Meneely
patent: 4836162 (1989-06-01), Melde-Tuczai et al.
patent: 4932372 (1990-06-01), Meneely
patent: 4984554 (1991-01-01), Ariga et al.
patent: 5309881 (1994-05-01), Pawellik et al.
Article Titled Development of Auxiliary Engine Braking Device for a Heavy Duty Engine with 4-Valve System, in Jidosha Gijutsu, vol. 46, no. 10, 1992 with Abridged Translation.

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