Engine air brake device for a 4-stroke reciprocating piston...

Details Engine air brake device for a 4-stroke reciprocating piston... Engine air brake device for a 4-stroke reciprocating piston...

2006-03-21

2006-03-21

Wolfe, Jr., Willis R. (Department: 3747)

Internal-combustion engines

Engine speed regulator

Responsive to deceleration mode

C123S323000

Reexamination Certificate

active

07013867

ABSTRACT:
An engine air brake device for a 4-stroke reciprocating-piston internal combustion engine is provided and has at least one intake valve and two exhaust valves per cylinder. The exhaust train incorporates a throttling device actuatable for engine deceleration so that an exhaust back pressure builds up in the accumulated exhaust gas upstream of the throttling device and becomes effective in conjunction with an engine-internal braking device associated to only one of the two exhaust valves for each cylinder, the other exhaust valve being controlled conventionally. The engine-internal braking device comprises a control piston installed in the valve bridge and pressed in the direction of the exhaust valve from a control pressure chamber supplied with pressurized oil and possibly also by means of an additional control compression spring.

REFERENCES:
patent: 5036810 (1991-08-01), Meneely
patent: 6152104 (2000-11-01), Vorih et al.
patent: 6234143 (2001-05-01), Bartel et al.
patent: 6325043 (2001-12-01), Meistrick et al.
patent: 6474296 (2002-11-01), Cornell et al.
patent: 2005/0087170 (2005-04-01), Rammer et al.

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