Internal-combustion engines – Engine speed regulator – Responsive to deceleration mode
Patent
1990-01-11
1991-01-01
Nelli, Raymond A.
Internal-combustion engines
Engine speed regulator
Responsive to deceleration mode
123323, F02D 1304, F02D 906
Patent
active
049811193
ABSTRACT:
A method of increasing the exhaust braking power of a four-stroke, reciprocating piston internal combustion engine, whereby in the braking operation, in a first and third stroke air is drawn in via an intake valve, and in a second and fourth stroke the air is compressed and, by partially opening an exhaust valve, is discharged against a damper that is disposed in an exhaust pipe or manifold. In order to increase the final compression pressure, i.e. to increase the energy that is to be applied for the compression, the exhaust valve is briefly opened at both the beginning and the end of the compression stroke.
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Neitz Alfred
Weiss Joachim
MAN Nutzfahrzeuge Aktiengesellschaft
Nelli Raymond A.
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