Method and device for the optimized starting of an internal combustion engine
First Claim
1. A method for optimized starting of an internal combustion engine with a starter, which is connected to a capacitor store, the capacitor store connected via a first DC/DC converter to a vehicle electrical system of a vehicle, the vehicle electrical system including an energy store for supplying electrical energy having a nominal voltage, and the starter consuming a starting energy for starting the internal combustion engine, which is a function of a temperature of the internal combustion engine, comprising:
- measuring the temperature of the internal combustion engine by at least one temperature sensor;
charging the capacitor store to a setpoint voltage by a battery via a second DC/DC converter, which connects the battery in parallel to the capacitor store parallel to a switch;
setting the setpoint voltage by a control device such that the electrical energy stored in the capacitor store charged to the setpoint voltage is greater than the starting energy ascertained on the basis of the measured temperature.
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Accused Products
Abstract
A method and a device are for the optimized starting of an internal combustion engine using a starter, which is connected to a capacitor store, the capacitor store being connected via a DC/DC converter to a vehicle electrical system of a vehicle, and the vehicle electrical system including an energy store for supplying electrical energy having a nominal voltage, and the starter consuming a starting energy for starting the internal combustion engine, which is a function of a temperature of the internal combustion engine, the temperature of the internal combustion engine being measured by at least one temperature sensor and the capacitor store being charged to a setpoint voltage with the aid of a battery via another DC/DC converter, which connects the battery in parallel to the capacitor store parallel to a switch, the setpoint voltage being set by a control unit such that the electrical energy stored in the capacitor store charged to the setpoint voltage is greater than the starting energy ascertained on the basis of the measured temperature.
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Citations
21 Claims
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1. A method for optimized starting of an internal combustion engine with a starter, which is connected to a capacitor store, the capacitor store connected via a first DC/DC converter to a vehicle electrical system of a vehicle, the vehicle electrical system including an energy store for supplying electrical energy having a nominal voltage, and the starter consuming a starting energy for starting the internal combustion engine, which is a function of a temperature of the internal combustion engine, comprising:
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measuring the temperature of the internal combustion engine by at least one temperature sensor; charging the capacitor store to a setpoint voltage by a battery via a second DC/DC converter, which connects the battery in parallel to the capacitor store parallel to a switch; setting the setpoint voltage by a control device such that the electrical energy stored in the capacitor store charged to the setpoint voltage is greater than the starting energy ascertained on the basis of the measured temperature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A device for optimized starting of an internal combustion engine, comprising:
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a starter; a first DC/DC converter; a capacitor store, the starter connected to the capacitor store, the capacitor store connected to a vehicle electrical system of a vehicle via the first DC/DC converter, the vehicle electrical system including an energy store for supplying electrical energy having a nominal voltage, the starter consuming a starting energy to start the internal combustion engine as a function of a temperature of the internal combustion engine, at least one temperature sensor configured to measure the temperature of the internal combustion engine; a battery configured to charge the capacitor store to a setpoint voltage via a second DC/DC converter, which connects the battery in parallel to the capacitor store parallel to a switch; and a control device configured to set the setpoint voltage such that electrical energy stored in the capacitor store charged to the setpoint voltage is greater than the starting energy ascertained on the basis of the measured temperature. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification