F - Mech Eng,Light,Heat,Weapons – 02 – B
Patent
F - Mech Eng,Light,Heat,Weapons
02
B
171/31
F02B 25/00 (2006.01) F02B 29/00 (2006.01) F02D 21/10 (2006.01)
Patent
CA 1077855
ABSTRACT OF THE DISCLOSURE Control system is adapted for an internal combustion engine in which a jet of air is injected into each com- bustion chamber via a second intake valve during each exhaust cycle and the subsequent intake cycle. The system comprises a source of compressed air having a pressure to be varied in accordance with the engine speed, an injection passageway leading from the source toward each second intake valve and a flow controller operated in accordance with changes in intake manifold vacuum. The flow controller includes a scheduled flow area therethrough to increase, under conditions in which the engine speed is constant, the amount of air passing through the injection passageway in accordance with increasing engine load in such a way as to increase a ratio of air flow through the injection passageway to the intake air flow to the engine under light engine load in order to cope with increasing residual gas fraction within each combustion chamber when the engine idles or operates under deceleration of the vehicle. - 1 -
294493
Nagumo Shin-Ichi
Nakajima Yasuo
Onoda Michio
Sugihara Kunihiko
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