Electric system of a vehicle
First Claim
1. An electric system of a vehicle having an engine and a transmission, said electric system comprising:
- a battery unit of a voltage higher than 14V;
a motor-generator unit, disposed between the engine and the transmission, for selectively functioning as a motor for driving the engine and as an electric generator driven by the engine; and
a control unit for recharging the battery unit by controlling output electric power of the motor-generator unit and for driving the motor-generator unit with electric power of the battery unit.
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Accused Products
Abstract
An electric system of a vehicle includes a motor-generator unit disposed between an engine and a transmission for selectively functioning as a motor for driving the engine, and as an electric generator driven by the engine. A control unit recharges a battery unit (of a voltage higher than 14V) by controlling output electric power of the motor-generator unit, and drives the motor-generator unit with electric power of the battery unit. The control unit counts a number of pulses sequentially received from a magnetic sensor for a predetermined period, and calculates a rotation speed of the motor-generator unit based at least in part a value obtained by dividing the number of the received pulses by the predetermined period.
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Citations
15 Claims
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1. An electric system of a vehicle having an engine and a transmission, said electric system comprising:
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a battery unit of a voltage higher than 14V;
a motor-generator unit, disposed between the engine and the transmission, for selectively functioning as a motor for driving the engine and as an electric generator driven by the engine; and
a control unit for recharging the battery unit by controlling output electric power of the motor-generator unit and for driving the motor-generator unit with electric power of the battery unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for determining the rotational speed of a motor in a vehicle, the method comprising:
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driving a motor that rotates a rotor, the rotor including a toothed wheel having a plurality of teeth;
generating pulses by magnetically sensing rotation of the plurality of teeth of the toothed wheel with a magnetic sensor, the magnetic sensor being fixed at a stationary portion of at least one of the engine and a transmission;
calculating rotational speed of the motor, in a control unit, based at least part on the pulses from the magnetic sensor. - View Dependent Claims (12, 13, 14, 15)
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Specification