Electric drive arrangement for internal combustion engines in motor vehicles
First Claim
1. An electric drive system for an internal combustion engine in a motor vehicle having an electric starter for the internal combustion engine, an electric generator in drive connection with the internal combustion and a battery for supplying voltage, said system comprising:
- a semiconductor circuit connected to said battery and said generator; and
an electronic control device controlling said semiconductor circuit, said electronic control device having a first input for receiving a vehicle start signal, a second input for receiving at least one temperature sensor signal and at least one output for providing a control signal to said electric starter and said semiconductor circuit;
wherein said electronic control device output signal controls on and off operation of said electric starter and controls said semiconductor circuit to effect operation of said generator in either a motor mode or a generator mode;
whereby starting of said internal combustion engine is performed as a function of said generator operating as a motor either alone or together with said electric starter, wherein said electronic control device includes means for switching the generator to operate as a motor, after the internal combustion engine is switched off and the fuel supply is switched off in order to maintain the rotation of the internal combustion engine during a post-operative phase until all residues still contained in the internal combustion engine or in a catalytic converter have been substantially removed.
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Accused Products
Abstract
An electric drive arrangement for internal combustion engines in motor vehicles having an electric starter coupled to the internal combustion engine, and an electric generator drive connected with the internal combustion engine. The arrangement is connected to a supply battery via a semiconductor circuit arrangement, which determines the operation of the generator either in a generator mode or a motor mode. An electronic control device is used for controlling the starting operation of the internal combustion engine as a function of the signal of at least one temperature sensor with the aid of the generator operated as a motor, either alone or together with the starter. This arrangement makes it possible to achieve quicker and more comfortable starting operations in combination with lower pollutant emissions. The starting operations can be carried out reliably even at very low temperatures.
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Citations
15 Claims
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1. An electric drive system for an internal combustion engine in a motor vehicle having an electric starter for the internal combustion engine, an electric generator in drive connection with the internal combustion and a battery for supplying voltage, said system comprising:
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a semiconductor circuit connected to said battery and said generator; and
an electronic control device controlling said semiconductor circuit, said electronic control device having a first input for receiving a vehicle start signal, a second input for receiving at least one temperature sensor signal and at least one output for providing a control signal to said electric starter and said semiconductor circuit;
wherein said electronic control device output signal controls on and off operation of said electric starter and controls said semiconductor circuit to effect operation of said generator in either a motor mode or a generator mode;
whereby starting of said internal combustion engine is performed as a function of said generator operating as a motor either alone or together with said electric starter, wherein said electronic control device includes means for switching the generator to operate as a motor, after the internal combustion engine is switched off and the fuel supply is switched off in order to maintain the rotation of the internal combustion engine during a post-operative phase until all residues still contained in the internal combustion engine or in a catalytic converter have been substantially removed. - View Dependent Claims (2, 3, 4, 5, 8, 9, 10, 11, 12)
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6. An electric drive system for an internal combustion engine in a motor vehicle having an electric starter for the internal combustion engine, an electric generator in drive connection with the internal combustion and a battery for supplying voltage, said system comprising:
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a semiconductor circuit connected to said battery and said generator; and
an electronic control device controlling said semiconductor circuit, said electronic control device having a first input for receiving a vehicle start signal, a second input for receiving at least one temperature sensor signal and at least one output for providing a control signal to said electric starter and said semiconductor circuit;
wherein said electronic control device output signal controls on and off operation of said electric starter and controls said semiconductor circuit to effect operation of said generator in either a motor mode or a generator mode;
whereby starting of said internal combustion engine is performed as a function of said generator operating as a motor either alone or together with said electric starter, further including a crankshaft control output from said electronic control device to set a defined angular position of the crankshaft when the internal combustion engine is shut off.
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7. An electric drive system for an internal combustion engine in a motor vehicle having an electric starter for the internal combustion engine, an electric generator in drive connection with the internal combustion and a battery for supplying voltage, said system comprising:
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a semiconductor circuit connected to said battery and said generator; and
an electronic control device controlling said semiconductor circuit, said electronic control device having a first input for receiving a vehicle start signal, a second input for receiving at least one temperature sensor signal and at least one output for providing a control signal to said electric starter and said semiconductor circuit;
wherein said electronic control device output signal controls on and off operation of said electric starter and controls said semiconductor circuit to effect operation of said generator in either a motor mode or a generator mode;
whereby starting of said internal combustion engine is performed as a function of said generator operating as a motor either alone or together with said electric starter, further including means for activating an ignition during the starting operation of the internal combustion engine providing speeds substantially equal to the starting speed.
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13. An electric drive system for an internal combustion engine in a motor vehicle having an electric starter for the internal combustion engine, an electric generator in drive connection with the internal combustion and a battery for supplying voltage, said system comprising:
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a semiconductor circuit connected to said battery and said generator; and
an electronic control device controlling said semiconductor circuit, said electronic control device having a first input for receiving a vehicle start signal, a second input for receiving at least one temperature sensor signal and at least one output for providing a control signal to said electric starter and said semiconductor circuit;
wherein said electronic control device output signal controls on and off operation of said electric starter and controls said semiconductor circuit to effect operation of said generator in either a motor mode or a generator mode;
whereby starting of said internal combustion engine is performed as a function of said generator operating as a motor either alone or together with said electric starter, wherein the electronic control device includes an output for controlling the starting operation of the internal combustion engine for immediate driving away of the motor by operation of the generator in the motor mode. - View Dependent Claims (14)
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15. An electric drive system for an internal combustion engine in a motor vehicle having an electric starter for the internal combustion engine, an electric generator in drive connection with the internal combustion and a battery for supplying voltage, said system comprising:
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a semiconductor circuit connected to said battery and said generator; and
an electronic control device controlling said semiconductor circuit, said electronic control device having a first input for receiving a vehicle start signal, a second input for receiving at least one temperature sensor signal and at least one output for providing a control signal to said electric starter and said semiconductor circuit;
wherein said electronic control device output signal controls on and off operation of said electric starter and controls said semiconductor circuit to effect operation of said generator in either a motor mode or a generator mode;
whereby starting of said internal combustion engine is performed as a function of said generator operating as a motor either alone or together with said electric starter, wherein said electronic control device further includes means for controlling the stopping operation of the motor vehicle without disconnecting internal combustion engine by means of the generator.
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Specification