Internal-combustion engines – Combustion chamber means having fuel injection only – Injection of fuel onto igniter – deflector – heater – or atomizer
Patent
1998-05-12
1999-06-29
Solis, Erick R.
Internal-combustion engines
Combustion chamber means having fuel injection only
Injection of fuel onto igniter, deflector, heater, or atomizer
123305, 12318814, F02B 1500
Patent
active
059153539
ABSTRACT:
A cylinder direct injection spark-ignition engine in which fuel is directly injected into each cylinder. The engine comprises intake and exhaust valves movably disposed to a cylinder head. A piston is movably disposed in a cylinder in a cylinder block so as to define a combustion chamber. The piston is formed at its piston crown with a generally circular cavity having a center axis which is offset from a center axis of the piston toward the intake valve. A spark plug is provided such that its tip end section is disposed above a part of a peripheral portion of the circular cavity which part is located closer to the center axis of the piston than to periphery of the piston. A device for generating swirl of intake air in the combustion chamber is provided. A fuel injector valve is provided to directly inject fuel into the combustion chamber and has an axis which inclines relative to a bottom flat surface of the cylinder head and gradually approaches the bottom flat surface in a direction from the intake valve to the exhaust valve. The fuel injector valve has a fuel ejection hole whose axis inclines relative to the axis of the fuel injector valve so as to form a first angle which is smaller than a second angle formed by the axis of the fuel injector valve, relative to the bottom flat surface of the cylinder head.
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Nissan Motor Co. Ltd
Solis Erick R.
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