Intake system for rotary piston engine

Internal-combustion engines – Rotary – With charge treatment means

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Details

123242, F02B 5304

Patent

active

045628041

ABSTRACT:
A two rotor type rotary piston engine includes an intake system including individual intake ports provided in at least one of the intermediate and side housings to open to the respective rotor cavities and adapted to be cyclically closed by the rotors as the rotors rotate, an intake passage including a throttle valve and individual passages leading respectively to the intake ports and communicated with each other by communicating passages downstream of the throttle valve. The intake port has an opening period of 270.degree. to 320.degree. in terms of the angle of rotation of the eccentric shaft, the communication passages and the individual passages leading to the respective rotor cavities having overall length between 0.57 and 1.37 m so that a compression wave produced in one individual passage in opening timing of one intake port is transmitted to the other intake port just before the other intake port is closed to obtain an additional charge under an engine speed range of 5000 to 7000 rpm.

REFERENCES:
patent: 3491733 (1970-01-01), Soubis
patent: 4020800 (1977-05-01), Ishikawa
patent: 4425883 (1984-01-01), Tadokoro et al.

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