Internal combustion engine having a direct injection combustion

Details Internal combustion engine having a direct injection combustion Internal combustion engine having a direct injection combustion

1998-11-25

2000-03-14

Solis, Erick R.

Internal-combustion engines

Combustion chamber means having fuel injection only

Combustible mixture stratification means

123636, 123305, F02B 1700

Patent

active

060358246

ABSTRACT:
Disclosed is an internal combustion engine having a direct injection combustion chamber. The internal combustion engine includes a fuel injector mounted in a cylinder head at substantially a center of the combustion chamber; an intake port and an exhaust port formed in the cylinder head and which exit into the combustion chamber on opposite sides of the fuel injector; a first spark plug mounted in the cylinder head such that a firing tip thereof is positioned under where the intake port exits into the combustion chamber, the first spark plug operating to ignite a lean mixture of fuel and air supplied to the combustion chamber by the intake port and the fuel injector; a second spark plug mounted in the cylinder head on one side of the fuel injector, and which ignites a fuel-air mixture of a stoichiometric ratio fed into the combustion chamber by the injector and the intake port; and a piston head provided on a upper face of a piston. A cavity is formed in the piston head of the piston and encompassing an area on the piston head corresponding to a where the fuel injector is positioned. The cavity is formed to a predetermined depth and a predetermined size, to both sides of an imaginary line formed by connecting points on the piston head corresponding to where the second spark plug and the fuel injector are positioned, such that a swirl effect of the fuel-air mixture in the combustion chamber is better generated.

REFERENCES:
patent: 4125094 (1978-11-01), Noguchi et al.
patent: 5211145 (1993-05-01), Ichikawa et al.
patent: 5269243 (1993-12-01), Mochizuki
patent: 5746171 (1998-05-01), Yaoita

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