Exhaust pulse boosted engine compression braking method

Details Exhaust pulse boosted engine compression braking method Exhaust pulse boosted engine compression braking method

1996-09-05

1998-03-10

Argenbright, Tony M.

Internal-combustion engines

Engine speed regulator

Responsive to deceleration mode

123321, F02D 1304

Patent

active

057249393

ABSTRACT:
A method of engine compression braking for an internal combustion engine is disclosed wherein the engine is converted to a two-cycle mode for braking. Exhaust valves are opened in cylinders wherein associated pistons are near top dead center and substantially simultaneously, exhaust valves are opened in cylinders wherein associated pistons are nominally past bottom dead center. The method results in an advantageous braking power increase due to back-filling of the cylinders wherein the pistons are nominally past bottom dead center. A similar method is disclosed for use during four-cycle braking.

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