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US 2009/0013962 A1Published application
In-Cylinder Injection Type Spark Ignition-Internal Combustion Engine
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsTakeshi Ashizawa, Osamu Tomino, Hiroshi Nomura
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Abstract
An in-cylinder-injection type spark-ignition internal combustion engine has a fuel injection valve and an ignition plug that are arranged substantially in the upper area of the cylinder. Fuel is injected from the fuel injection valve in the flow direction of the tumble flow that swirls in the cylinder by flowing downward through the exhaust valve side of the cylinder bore and upward through the intake valve side of the cylinder bore, so as to intensify the tumble flow.
Claims13
An in-cylinder-injection type spark-ignition internal combustion engine, comprising:
- a fuel injection valve;
- and
- an ignition plug, wherein:
- the fuel injection valve and the ignition plug are arranged in an upper area of the internal combustion engine, and the fuel injection valve is adapted to inject fuel substantially in a flow direction of a tumble flow that swirls in the cylinder by flowing downward through an exhaust valve side of a cylinder bore of the cylinder and upward through an intake valve side of the cylinder bore, so as to intensify the tumble flow.
1 more element
Dependencies are inferred from the claim text.