Vehicle control system
AssigneeDenso Corporation
InventorsMasayuki Kobayashi, Takeshi Suganuma
Life of this patent
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Abstract
A vehicle control system has an ECU for controlling an actuator and a sensor ECU that receives a crankshaft signal of a vehicle engine. These ECUs exchange information via an intra-vehicle communication network for attaining distributed functions. The sensor ECU calculates a crankshaft angle on the basis of a received camshaft signal and crankshaft signal and outputs the calculated crankshaft angle to a TCM ECU. The TCM ECU determines operation timing of an igniter on the basis of the received crankshaft angle and outputs the operation timing of the igniter to an ignition ECU. The ignition ECU controls the igniter on the basis of the received timing. As a result, temporal deviation between the crankshaft angle and the control timing of the actuator is suppressed.
Claims10
A vehicle control system comprising:
- an actuator control ECU, connected to an intra-vehicle communication network, for controlling an actuator that operates in synchronism with a crankshaft angle of a vehicle engine;
- a sensor ECU, connected to the intra-vehicle communication network to which the actuator control ECU is connected, for receiving a crankshaft signal and a camshaft signal of the vehicle engine;
- and
- a timing determining means,
- wherein the sensor ECU includes crankshaft angle calculating means for calculating a crankshaft angle on the basis of the received camshaft signal and crankshaft signal and crankshaft angle outputting means for outputting the crankshaft angle calculated by the crankshaft angle calculating means to the timing determining means via the intra-vehicle communication network,
- wherein the timing determining means is provided in one of ECUs that are connected to the intra-vehicle communication network and determines operation timing of the actuator on the basis of the received crankshaft angle, and
- wherein the actuator control ECU includes timing control means for controlling the actuator on the basis of the timing determined by the timing determining means.
A vehicle control system comprising:
- an actuator control ECU, connected to an intra-vehicle communication network, for controlling an actuator that operates in synchronism with a crankshaft angle of a vehicle engine;
- a sensor ECU, connected to the intra-vehicle communication network, for receiving a crankshaft signal of the vehicle engine;
- a camshaft ECU, connected to the intra-vehicle communication network, for receiving a camshaft signal of the vehicle engine;
- and
- a timing determining means,
- wherein the crankshaft ECU outputs information based on the received crankshaft signal to the timing determining means,
- wherein the camshaft ECU sends information based on the received camshaft signal to the timing determining means,
- wherein the timing determining means determines operation timing of the actuator on the basis of the received information based on the crankshaft signal and information based on the camshaft signal,
- wherein the actuator control ECU includes timing control means for controlling the actuator on the basis of the timing determined by the timing determining means, and
- wherein the intra-vehicle communication network allows the crankshaft ECU to send the information based on the received crankshaft signal without losing it.
A vehicle control system comprising:
- an actuator control ECU, connected to an intra-vehicle communication network, for controlling an actuator that operates in synchronism with a crankshaft angle of a vehicle engine;
- a sensor ECU, connected to the intra-vehicle communication network, for receiving a crankshaft signal of the vehicle engine;
- and
- a timing determining means,
- wherein the sensor ECU includes crankshaft angle calculating means for calculating a crankshaft angle on the basis of the received crankshaft signal and crankshaft angle outputting means for outputting the crankshaft angle calculated by the crankshaft angle calculating means to the timing determining means via the intra-vehicle communication network,
- wherein the timing determining means is provided in one of ECUs that are connected to the intra-vehicle communication network and determines operation timing of the actuator on the basis of the received crankshaft angle, and
- wherein actuator control ECU includes timing control means for controlling the actuator on the basis of the timing determined by the timing determining means.
Dependencies are inferred from the claim text.