Method and apparatus for a low emission diesel engine

Details Method and apparatus for a low emission diesel engine Method and apparatus for a low emission diesel engine

1980-03-03

1982-05-04

Feinberg, Craig R.

Internal-combustion engines

Poppet valve operating mechanism

Rod

123 9016, F01L 108

Patent

active

043276768

ABSTRACT:
An improved method and apparatus four operating a high-speed four cycle compression ignition engine cause the amount of NO.sub.x in the exhaust gases to be reduced substantially. The improved method of operating the high-speed for cycle compression ignition engine is of the type wherein fresh working fluid is introduced through an intake valve, the working fluid is compressed, fuel is injected and burns thereby expanding the working fluid, and the working fluid is scavenged through an exhaust valve, the improvement comprising timing the opening of the intake valve and the closing of the exhaust valve so that no fresh working fluid is permitted to pass out the exhaust valve.
The timing of the opening of the intake valve and the closing of the exhaust valve is achieved by adjusting the contours and the relative positions of the valve cams on the cam shaft of the engine.

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patent: 4143629 (1979-03-01), Goloff et al.
patent: 4157080 (1979-06-01), Hill
The Internal Combustion Engine in Theory and Practice, vol. 1, M.I.T. Press, Mass., 1966, pp. 188-193.

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