Intake system for multiple-cylinder engine

Details Intake system for multiple-cylinder engine Intake system for multiple-cylinder engine

1987-11-29

1989-05-16

Okonsky, David A.

Internal-combustion engines

Multiple cylinder

123 52MV, F02B 7518

Patent

active

048299413

ABSTRACT:
An intake system for a multiple-cylinder engine has a main intake passage open to the atmosphere at its upstream end, a plurality of discrete intake passages which communicate the respective cylinders with the main intake passage by way of intake ports, and a circular passage which is communicated with the cylinders. The circular passage is adapted to propagate pressure waves generated by the intake strokes without reflecting the pressure waves, and is provided with a valve which opens the circular passage to permit propagation of the pressure waves in a predetermined high engine speed range. The length of the circular passage is selected so that the pressure waves resonate in the predetermined high engine speed range.

REFERENCES:
patent: 4440120 (1984-04-01), Muller
patent: 4736714 (1988-04-01), Hokazono et al.

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