Engine brake for a multicylinder internal combustion engine

Details Engine brake for a multicylinder internal combustion engine Engine brake for a multicylinder internal combustion engine

1992-06-29

1993-11-02

Nelli, Raymond A.

Internal-combustion engines

Engine speed regulator

Responsive to deceleration mode

123319, 123320, F02D 1304

Patent

active

052576051

ABSTRACT:
An engine brake for a multicylinder internal combustion engine includes valves that can be periodically opened briefly, in each case outside the exhaust stroke. In the vicinity of the applicable valve drive, a hydraulic piston is provided that is triggered synchronously with the engine rpm via an associated control line by a hydraulic pressure distributor fed by a pump. To improve the accuracy of control over the entire engine rpm range, the various valves are assigned a central positive displacement pump that runs synchronously with the camshaft rpm and whose outlet line leads to the hydraulic pressure distributor, which has a distributor disk. In engine braking operation, an alternating connection of the applicable control line to either the pump outlet line or a low-pressure region of the hydraulic control circuit is effected synchronously with the engine rpm by means of the distributor disk.

REFERENCES:
patent: 4848289 (1989-07-01), Meneely
patent: 4922872 (1990-05-01), Nogami et al.
patent: 5012778 (1991-05-01), Pitzi
patent: 5036810 (1991-08-01), Meneely
patent: 5048480 (1991-09-01), Price
patent: 5060611 (1991-10-01), Krampe et al.
patent: 5088460 (1992-02-01), Echevarria
ATZ Automobiltechnische Zeitschrift 90, Wolf-Dietrich Korner, Horst Bergmann und Eckhard Weiss, Die Motorbremse von Nutzfahrzeugen--Grenzen und Moglichkeiten zur Weiterentwicklung, 1988, pp. 671-682.

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