Internal combustion engine with ceramics valves

Details Internal combustion engine with ceramics valves Internal combustion engine with ceramics valves

1988-04-27

1989-10-10

Cross, E. Rollins

Internal-combustion engines

Valve

Valve head cooperates with manifold

123315, 123 9023, 123432, F01L 300

Patent

active

048724319

ABSTRACT:
An internal combustion engines comprises at least one exhaust valve made of ceramics per each engine cylinder and a pluarality of intake valves made of steel. The relation in number and valve head diameter between the intake and exhaust valves is designed so as to give Pe<Pi and De>Di where Pe is the number of exhaust valves per each engine cylinder, Pi is the number of intake valve per each engine cylinder, De is the valve head diameter of the exhaust valves and Di is the valve head diameter of the intake valve.

REFERENCES:
patent: 4385598 (1983-05-01), Nakajima et al.
patent: 4519364 (1985-05-01), Enomoto et al.
patent: 4530322 (1985-07-01), Yamada et al.
patent: 4660529 (1987-04-01), Yoshikawa
"Automotive Engineering", Ceramic in an Engine, Issue 12 of 1986, p. 372.

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