Internal combustion engine with two or more inlet valves per eng

Details Internal combustion engine with two or more inlet valves per eng Internal combustion engine with two or more inlet valves per eng

1991-02-20

1992-08-18

Cross, E. Rollins

Internal-combustion engines

Particular piston and enclosing cylinder construction

Cylinder head

123308, 123 9016, 123302, F02F 100

Patent

active

051389894

ABSTRACT:
In an internal combustion engine with two or more inlet valves for each engine cylinder and roof-shaped boundary surfaces of the combustion chamber in the cylinder head--the main flow directions of the partial streams admitted into the combustion chamber by the inlet valves each forming an acute angle with the plane defined by the cylinder axes of a cylinder bank, i.e., the symmetry plane--, a strong torque of the charge in the combustion chamber is obtained at partial load without impairing the intake of charge at full load due to a deterioration of flow characteristics, by providing that the angle of at least one partial stream on one side of a plane going through the cylinder axis and being normal to the symmetry plane, be made larger by 10 to 40 degrees than the angle of at least one corresponding partial stream on the other side of this normal plane.

REFERENCES:
patent: 4211189 (1980-07-01), Hamai
patent: 4548175 (1985-10-01), Kawai et al.
patent: 4766866 (1988-08-01), Takaii et al.
patent: 4926804 (1990-05-01), Fukuo
patent: 4944266 (1990-07-01), Hasegawa et al.
patent: 4957081 (1990-09-01), Ito et al.
patent: 5009204 (1991-04-01), Ishii

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