Hybrid vehicle with oil pump selectively driven by the engine, a generator or a motor
First Claim
1. A hybrid vehicle comprising:
- an internal-combustion engine for driving an engine output shaft;
a generator operable at a variable rotational speed based on an instruction signal;
an electric motor driven by an electric current supplied thereto;
an unit output shaft connected to drive wheels of the vehicle;
a differential gear unit comprising at least a first gear element connected to said generator, a second gear element connected to said engine output shaft, and a third gear element connected to said unit output shaft and, through said unit output shaft, to said electric motor;
an oil pump for lubrication rotatably driven by at least one of said engine output shaft, a transmission shaft connected to said generator, and said unit output shaft; and
control means for receiving said instruction signal and for controlling amount of discharge from said oil pump by controlling the rotational speed of said generator in accordance with said instruction signal.
2 Assignments
0 Petitions
Accused Products
Abstract
A hybrid vehicle with control of the amount of discharge from an oil pump in accordance with the amount needed. The hybrid vehicle includes an oil pump (55) driven by a rotation from a secondary side (a carrier CR) of a one-way clutch (F1), an engine (11), a generator (16), and an output shaft (14) connected by a planetary gear unit (13). The one-way clutch (F1) is provided between the carrier (CR) of the planetary gear unit (13) and the engine (11). The rotation of the carrier (CR) via the planetary gear unit (13) is adjusted by controlling the generator (16) under command of a vehicle control unit (41), to appropriately adjust the amount of discharge from the oil pump (55) based on a detected running load.
85 Citations
21 Claims
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1. A hybrid vehicle comprising:
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an internal-combustion engine for driving an engine output shaft; a generator operable at a variable rotational speed based on an instruction signal; an electric motor driven by an electric current supplied thereto; an unit output shaft connected to drive wheels of the vehicle; a differential gear unit comprising at least a first gear element connected to said generator, a second gear element connected to said engine output shaft, and a third gear element connected to said unit output shaft and, through said unit output shaft, to said electric motor; an oil pump for lubrication rotatably driven by at least one of said engine output shaft, a transmission shaft connected to said generator, and said unit output shaft; and control means for receiving said instruction signal and for controlling amount of discharge from said oil pump by controlling the rotational speed of said generator in accordance with said instruction signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A hybrid vehicle comprising:
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an engine output shaft connected to an internal-combustion engine for outputting rotation of the internal-combustion engine; a generator; an electric motor, driven by an electric current supplied thereto, for driving a motor output shaft; a differential gear device consisting of a first gear element which is connected to a transmission shaft driven by said generator, a second gear element which is connected for rotation with said motor output shaft and a third gear element which is connected to said engine output shaft; an oil pump and an oil pump input shaft for driving said oil pump; a first one-way clutch for connecting a shaft, which is synchronistically rotated with the motor output shaft, with said oil pump input shaft; and a second one-way clutch for connecting a shaft, which is synchronistically rotated with the engine output shaft, with said oil pump input shaft. - View Dependent Claims (18, 19, 20, 21)
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Specification