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US 7,025,046 B2Granted
Intake structure in internal combustion engine
AssigneeHonda Motor Co., Ltd.
InventorsKenichiro Ikeda, Kenji Oki, Nobuhiro Shimada
Life of this patent
Estimating the term…
Abstract
A fuel injection device is installed in a cylinder head of an internal combustion engine in such a manner that a fuel injection port thereof faces a curved intake passage formed in the cylinder head. Fuel is injected from the fuel injection device directly toward a wall surface of the intake passage without aiming at an intake port.
Claims17
An intake structure in an internal combustion engine, the intake structure comprising:
- a cylinder head;
- a combustion chamber in the cylinder head;
- an intake port and an exhaust port defined by the combustion chamber, the intake port defining a valve axis;
- an intake passage and an exhaust passage communicating with the intake port and the exhaust port, respectively;
- an intake valve and an exhaust valve for opening and closing the intake port and the exhaust port in the intake passage and the exhaust passage, respectively;
- and
- a fuel injection device installed in the cylinder head, the fuel injection device defining a fuel injection orifice facing the intake passage and defining an injection axis, the fuel injection orifice being positioned in proximity to the intake valve for opening and closing the intake port, and the injection axis of the fuel injection orifice being generally parallel to and offset from the valve axis of the intake port.
4 more elements
An internal combustion engine having an intake structure comprising:
- a cylinder head;
- a combustion chamber in the cylinder head;
- an intake port and an exhaust port defined by the combustion chamber, the intake port defining a valve axis;
- an intake passage and an exhaust passage communicating with the intake port and the exhaust port, respectively;
- an intake valve and an exhaust valve for opening and closing the intake port and the exhaust port in the intake passage and the exhaust passage, respectively;
- and
- a fuel injection device installed in the cylinder head, the fuel injection device defining a fuel injection orifice facing the intake passage and defining an injection axis, the fuel injection orifice being positioned in proximity to the intake valve for opening and closing the intake port, and the injection axis of the fuel injection orifice being generally parallel to and offset from the valve axis of the intake port.
4 more elements
A vehicle, comprising:
- a frame;
- a plurality of wheels coupled to the frame;
- and
- an internal combustion engine including an intake structure, the intake structure including:
- a cylinder head;
- a combustion chamber in the cylinder head;
- an intake port and an exhaust port defined by the combustion chamber, the intake port defining a valve axis;
- an intake passage and an exhaust passage communicating with the intake port and the exhaust port, respectively;
- an intake valve and an exhaust valve for opening and closing the intake port and the exhaust port in the intake passage and the exhaust passage, respectively;
- and
- a fuel injection device installed in the cylinder head, the fuel injection device defining a fuel injection orifice facing the intake passage and defining an injection axis, the fuel injection orifice being positioned in proximity to the intake valve for opening and closing the intake port, and the injection axis of the fuel injection orifice being generally parallel to and offset from the valve axis of the intake port.
8 more elements
A method for injecting fuel for an internal combustion engine, the method comprising:
- providing an intake structure including a cylinder head, a combustion chamber in the cylinder head, an intake port and an exhaust port defined by the combustion chamber, the intake port defining a valve axis, an intake passage and an exhaust passage communicating with the intake port and the exhaust port, respectively;
- and an intake valve and an exhaust valve for opening and closing the intake port and the exhaust port in the intake passage and the exhaust passage, respectively;
- installing a fuel injection device defining a fuel injection orifice facing the intake passage and defining an injection axis such that the injection axis of the fuel injection orifice is generally parallel to and offset from the valve axis of the intake port;
- and
- allowing the fuel injection device to inject fuel through the fuel injection orifice in a direction of the injection axis such that the fuel contacts a top portion of the intake passage, causing at least a portion of the fuel to become atomized.
2 more elements
Dependencies are inferred from the claim text.