Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
162 words
A regenerative braking system for a motor vehicle comprising: a revolution sensor for detecting the number of revolutions of a motor; an acceleration opening sensor; a discriminator means for discriminating between a regenerative braking mode and a drive mode based on the number of revolutions of the motor and the accelerator opening and for producing a signal responsive thereto; a memory means for storing on-off duty ratio data of switching elements of an inverter in the regenerative braking mode in a corresponding relation to the number of revolutions of the motor and the accelerator opening; and control means for retrieving on-off duty ratio data corresponding to the number of revolutions of the motor and the accelerator opening from said memory means when the signal generated by the discriminator means indicates that the system is in the regenerative braking mode, and for controlling the switching elements at an on-off duty ratio corresponding to the retrieved on-off duty ratio data to effect regenerative braking.
Claim 2
Dependent Claim
38 words
The regenerative braking system for a motor vehicle according to claim 1, wherein approximately a motor driving force zero line is set as a boundary between the regenerative braking mode and the drive mode in said discriminator means.
Claim 3
Dependent Claim
34 words
The regenerative braking system for a motor vehicle according to claim 1, wherein regenerative braking may be applied during high speed operation of the motor vehicle with a zero level of an accelerator signal.
Claim 4
Dependent Claim
104 words
A power unit for a motor vehicle having an electric motor comprising: a unit case with at least a portion of the unit case forming a motor case; a rotating shaft of the electric motor being operatively connected for supplying power to an output shaft supported rotatably relative to the unit case and said power of the electric motor outputted from the output shaft being transmitted to a driven wheel of said motor vehicle; a heat sink operatively connected to said motor case; and switching elements for switching an electric current to be supplied to said electric motor being mounted to said heat sink.
Claim 5
Dependent Claim
54 words
The power unit according to claim 4, and further including a cover member for covering the switching elements mounted on said heat sink and resin being filled between said cover member and said heat sink to fix the cover member to said heat sink and for fixing the heat sink to the motor case.
Claim 6
Dependent Claim
115 words
The power unit according to claim 4, wherein said unit case is divided into said motor case and a case body in an axial direction of said rotating shaft between end portions of the rotating shaft, a bearing for rotatably supporting one end portion of said rotating shaft, a rotation sensor for detecting the rotation of the rotating shaft; said bearing, said rotation sensor and said heat sink being mounted within said motor case; and said heat sink being disposed on one side of said bearing in the axial direction of the rotating shaft and said rotation sensor being disposed on the other side of the bearing in the axial direction of the rotating shaft.
Claim 7
Dependent Claim
115 words
The power unit according to claim 5, wherein said unit case is divided into said motor case and a case body in an axial direction of said rotating shaft between end portions of the rotating shaft, a bearing for rotatably supporting one end portion of said rotating shaft, a rotation sensor for detecting the rotation of the rotating shaft; said bearing, said rotation sensor and said heat sink being mounted within said motor case; and said heat sink being disposed on one side of said bearing in the axial direction of the rotating shaft and said rotation sensor being disposed on the other side of the bearing in the axial direction of the rotating shaft.
Claim 8
Dependent Claim
43 words
The power unit according to claim 6, and further including a stator of said electric motor being fixed to said motor case and said stator and said rotation sensor being disposed adjacent to each other in the axial direction of said rotating shaft.
Claim 9
Dependent Claim
43 words
The power unit according to claim 7, and further including a stator of said electric motor being fixed to said motor case and said stator and said rotation sensor being disposed adjacent to each other in the axial direction of said rotating shaft.
Claim 10
Dependent Claim
94 words
The power unit according to claim 4, and further including connecting terminals exposed on a heat sink side face of said motor case; a plate member including terminals being mounted to the motor case in a predetermined position for supplying electrical current between said connecting terminals and said terminals; power supply terminals operatively positioned relative to said heat sink and connected to said switching elements; and said heat sink being mounted to said motor case through said plate member to render said power supply terminals and said terminals electrical conductive relative to each other.