Intake system for V-type engine
An intake system is described for a V-type engine having a pair of cylinder banks set at an angle to each other on opposite sides of an output shaft having a predetermined direction, intake ports opening in inner wall portions of the respective cylinder banks and communicating one with each cylinder in the cylinder bank, the intake system comprising a surge tank defining an internal space disposed substantially midway between the cylinder banks, a common intake passage communicating the internal space of the surge tank atmosphere, and discrete intake passages, each communicating the internal space of the surge tank with one of the cylinders by way of the intake port communicating therewith, characterized in that the surge tank has upper and lower walls extending in a direction parallel to the output shaft of the engine, and side walls connecting with the upper and lower walls and extending in a direction parallel to the output shaft of the engine, and each of the discrete intake passages for the cylinders in each cylinder bank comprises a U-shaped bight portion which laterally projects from each of the side walls of the surge tank above a top portion of a cylinder head of the cylinder bank adjacent thereto. It extends to the cylinder bank remote from the respective side wall having a corresponding one of the intake ports so as to extend away from the adjacent cylinder bank and is downwardly bent toward the remote cylinder bank.
- Assignee:
- Mazda Motor Corp.
- Patent Number(s):
- US 4649871
- OSTI ID:
- 6879728
- Resource Relation:
- Patent File Date: Filed date 15 Mar 1985
- Country of Publication:
- United States
- Language:
- English
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