| 摘要 |
PROBLEM TO BE SOLVED: To provide a secondary air supply system for a motorcycle, excellent in layout property and maintainability while allowing arrangement of reed valves at a center part between cylinders. SOLUTION: In a multicylinder engine 17 of a motorcycle in which the secondary air supply system 46 is disposed to a cylinder head 19, the reed valves 57 for secondary air supply are disposed between neighboring cylinders to be in parallel with each other in a direction orthogonal to a cylinder array direction, and a secondary air supply passage 60 opened/closed by the reed valves 57 is formed in the cylinder head 19. COPYRIGHT: (C)2007,JPO&INPIT
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