HYBRID POWER UNIT

摘要

A hybrid power unit is mounted on a vehicle body frame of a saddle-type vehicle and is composed of an engine, a transmission, a clutch system, that enables switching between connection and disconnection of power transmission between a crankshaft and the transmission, and an electric motor capable of transmitting rotational power to the transmission. An operation of the electric motor alone is enabled with alleviation of the load. Thus, an increase in the size in the direction along the axis line of the crankshaft is avoided. The electric motor, rendered incapable of direct power transmission from and to a crankshaft, is housed in a transmission chamber so as to be allowed to transmit rotational power from a rotor of the electric motor to a transmission shaft. The rotor is disposed on an upper side relative to the highest oil level of lubricating oil in the transmission chamber.

主权项

1. A hybrid power unit that is mounted on a vehicle body frame of a saddle vehicle, comprising:
an engine having a crankcase for rotatably supporting a crankshaft; a transmission includes a transmission shaft parallel to the crankshaft and is housed in a transmission chamber formed in the crankcase below the crankshaft; a clutch system for enabling a switching between a connection and a disconnection of a power transmission from the crankshaft to the transmission shaft; and an electric motor capable of transmitting rotational power to the transmission shaft; wherein the electric motor, rendered incapable of direct power transmission from and to the crankshaft, is housed in the transmission chamber in such a manner as to be allowed to transmit rotational power from a rotor of the electric motor to the transmission shaft; and the rotor is disposed on an upper side relative to a highest oil level of lubricating oil in the transmission chamber.