Intake system for rotary piston engine

Details Intake system for rotary piston engine Intake system for rotary piston engine

1983-12-01

1986-01-07

Koczo, Michael

Internal-combustion engines

Rotary

With charge treatment means

123242, F02B 5304

Patent

active

045628050

ABSTRACT:
A two rotor type rotary piston engine includes an intake system comprised of light load intake ports provided in the intermediate housing and heavy load intake ports provided in side housings to open to the respective rotor cavities and being cyclically closed by the rotors as the rotor rotates, an intake passage including a throttle valve and individual passages leading respectively to the intake ports. The passages leading to the light load ports are communicated with each other by a communicating passage downstream of the throttle valve. The heavy load intake port includes a main port and an auxiliary port. The auxiliary port is normally closed but opened in high speed, heavy load operation by a control valve and has a closing timing later than that of the main port. The communication passage and the individual passages leading to the light load intake ports have overall length in relation to the port timings so that a compression wave produced in one individual passage in opening timing of one light load intake port is transmitted to the other light load intake port just before the other light load intake port is closed to obtain an additional charge under an engine speed in which the control valve is moved from the closed position to the open position or vice versa.

REFERENCES:
patent: 3370575 (1968-02-01), Soubis
patent: 4423711 (1984-01-01), Tadokoro et al.
patent: 4425883 (1984-01-01), Tadokoro et al.

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