Internal combustion engine having at least two inlet valves per

Details Internal combustion engine having at least two inlet valves per Internal combustion engine having at least two inlet valves per

1988-05-20

1989-05-30

Cross, E. Rollins

Internal-combustion engines

Combustion chamber means combined with air-fuel mixture...

Air or combustible mixture entering the combustion chamber...

123 52M, 123188M, F02B 1500

Patent

active

048340480

ABSTRACT:
In the embodiment of the invention described in the specification, two inlet valves associated with a cylinder of an internal combustion engine are supplied through two separate inlet lines. One of the inlet valves is supplied with air and fuel at all engine speeds, and the other inlet valve is supplied with supplementary air at higher engine speeds only. The valve opening curves are so chosen that gas return flows are avoided in the case of the gas and air inlet valve, and a scavenging effect is achieved by maintaining the supplementary air inlet valve open for a longer time.

REFERENCES:
patent: 4703734 (1987-11-01), Aoyama et al.
patent: 4727719 (1988-03-01), Mitzutani

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