Intake port structure for internal combustion engine
AssigneeMitsubishi Jidosha Kogyo Kabushiki Kaisha
InventorsSyunsuke Matsuo, Osamu Hirako, Nobuaki Murakami, Katsuo Akishino, Keizo Furukawa, Hiromitsu Ando, Kinichi Iwachido, Masayuki Motomochi
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Abstract
This invention relates to an intake port structure for an internal combustion engine. It is an object of the present invention to increase the strength of tumbling without lowering the maximum flow rate. An intake port (44) is constructed broader in a tumble-flow-side half (44a) than in the other half (44b) to have an intake air flow through the intake port (44) off-centered toward the side of a tumble flow, whereby an intake air flow from the intake port (44) promotes the tumble flow.
Claims11
An intake port structure for an internal combustion engine constructed to cause an intake air flow from an intake port (44) to become a tumble flow in a combustion chamber (30), characterized in that:
- the intake port (44) is broader in a tumble-flow-side half (44a) thereof than in the other half (44b) and an intake air flow through the intake port (44) is off-centered toward a side of the tumble flow, whereby the intake air flow from the intake port (44) can promote the tumble flow.
An intake port structure for an internal combustion engine constructed to cause intake air flows from corresponding plural intake ports (46A,46B) to become a tumble flow in a combustion chamber (30), characterized in that:
- the intake ports (46A,46B) are broader in tumble-flow-side halves (46A-1,46B-1) thereof than in the other halves (46A-2,46B-2) and intake air flows through the respective intake ports (46A,46B) are off-centered toward a side of the tumble flow, whereby the intake air flows from the respective intake ports (46A,46B) can promote the tumble flow;
- at least one of the intake ports (46A or 46B) is provided with a partition (21) to divide the interior thereof along the direction of a flow of a fluid therethrough into two sections, one being on a side of ignition means in the combustion chamber (30) and the other on a side opposite to the ignition means;
- and
- fuel feed means (12) for feeding fuel is arranged in the intake port (46A,46B), which is divided by the partition (21), on a side of the ignition means.
Dependencies are inferred from the claim text.