Method of generating turbulence with intra-cycle cooling for spa

Details Method of generating turbulence with intra-cycle cooling for spa Method of generating turbulence with intra-cycle cooling for spa

1997-09-10

1999-01-26

Okonsky, David A.

Internal-combustion engines

Four-cycle

Having subcharger associated with the cylinder

123540, F02B 1910

Patent

active

058627901

ABSTRACT:
A method of operating a four stroke, spark ignition, high compression ratio, internal combustion engine including at least one intake valve (30), exhaust valve (32) and charging valve (36) per cylinder (16). Each of the valves is actuable by a variable timing mechanism (50), which is controlled by an on-board computer (82) that varies the timing of valve opening and closing depending upon engine operating conditions. Each charging valve port (34) leads to an auxiliary chamber (40) having geometry to cause a swirling motion of the charge entering the chamber and surrounded by a cooling jacket (42) to cool the charge as it swirls before being released back into the cylinder during the next engine cycle.

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