Transmission unit for hybrid vehicle
First Claim
1. A transmission unit for a hybrid vehicle, the transmission unit comprising:
- a unit housing which comprises;
a first section defining a clutch chamber for containing an electromagnetic clutch;
a second section defining a transmission chamber for containing a transmission; and
a third section defining a motor chamber for containing a motor comprising a rotor and a stator, and a water jacket for circulation of water to cool the stator, the water jacket comprising an annular passage extending around the motor chamber, and comprising a water inlet for introducing the water into the annular passage, a water outlet for discharging the water from the annular passage, and a depressed portion which is depressed to form a space for receiving an adjacent component of the transmission unit, and which has a cross sectional shape varied gradually while a flow sectional area is held uniform.
2 Assignments
0 Petitions
Accused Products
Abstract
A transmission unit for a hybrid vehicle includes a housing formed with a water jacket for cooling a stator of a motor. The water jacket includes a hollow annular passage having a water inlet and a water outlet. The water jacket has at least one uneven or depressed portion for avoiding an adjacent component. At the uneven portion, the cross sectional shape of the flow passage is varied gradually and smoothly so that the cross-sectional area of the flow passage remains constant. The water jacket further includes an inflow passage extending in a tangential direction to the water inlet, and an outflow passage extending in a radial direction from the water outlet.
28 Citations
10 Claims
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1. A transmission unit for a hybrid vehicle, the transmission unit comprising:
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a unit housing which comprises;
a first section defining a clutch chamber for containing an electromagnetic clutch;
a second section defining a transmission chamber for containing a transmission; and
a third section defining a motor chamber for containing a motor comprising a rotor and a stator, and a water jacket for circulation of water to cool the stator, the water jacket comprising an annular passage extending around the motor chamber, and comprising a water inlet for introducing the water into the annular passage, a water outlet for discharging the water from the annular passage, and a depressed portion which is depressed to form a space for receiving an adjacent component of the transmission unit, and which has a cross sectional shape varied gradually while a flow sectional area is held uniform. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification