摘要:
A V-type internal combustion engine includes cylinder heads having respective compressed-air supply channels extending therein for providing fluid communication between an air compressor and charge injectors. Formation of condensation in the compressed-air supply channels is prevented. Charge injectors are provided in the respective cylinder heads, for directly injecting charges of fuel-air mixture into combustion chambers in cylinders. Compressed-air supply channels extend from an air compressor to the respective charge injectors, including a shared channel provided in a crankcase, and branched supply channels provided in each of the respective cylinder blocks. The compressed-air supply channels are internal conduits formed by attaching the cylinder blocks to the crankcase. In addition, cooling of the compressed air in the compressed-air supply channels is prevented during engine operation, so that formation of condensation within the compressed-air supply channels is prevented.
摘要:
A hybrid motorcycle includes a body frame, a front wheel, and a hybrid driving source. The hybrid driving source is mounted on the body frame between a head pipe and a swing arm pivot. The hybrid driving source includes an engine and a motor. The engine has a crankshaft whose axial direction is substantially parallel to a vehicle longitudinal direction. The motor is provided at a front shaft end adjacent to the front wheel.
摘要:
To effectively reduce operational noise generated by vibration of the fuel injection valve with a fuel injection valve installation structure of an engine. In the structure, an installation hole is formed in an engine component member that constitutes a part of an engine. The installation hole has an annular shoulder portion, which is formed in the middle portion thereof, and which faces the exterior side. The fuel injection valve is held between the annular shoulder portion and a supporting member attached to the engine component member. A first damper, with high vibration-damping properties, is set between an annular shoulder portion and a fuel injection valve. A second damper, with high vibration-damping quality, is set between a supporting member and the fuel injection valve.
摘要:
In an automatic multispeed transmission having at least two centrifugal clutches arranged on a rotary shaft driven by the output shaft of an engine and adapted to engage at predetermined different rotational speeds and higher of the rotary shaft, each clutch having an input member drivingly engageable with an output member by the opening motion of weights, an engagement prohibiting mechanism is provided, which is manually operatable to prohibit the opening motion of the weights of one of the clutches which is engageable at a predetermined rotational speed higher than that of the lowest engaging speed clutch. Further, a disabling mechanism is provided to release the engagement prohibiting mechanism from its prohibiting action to permit the opening motion of the weights when the centrifugal force of the weights is larger than a predetermined value.