CONTROLLER FOR HYBRID SYSTEM
First Claim
1. A controller for a hybrid system that includes:
- an internal combustion engine that uses a fuel mixed with alcohol;
a coolant heater that heats coolant for the internal combustion engine when the heater is supplied with electric power; and
a storage battery that supplies electric power to the coolant heater, and that is charged at least when the storage battery is connected to an external electric power source,the controller for the hybrid system comprising;
an alcohol concentration detector that detects alcohol concentration of the fuel;
a demanded coolant temperature setting device that sets a demanded coolant temperature higher as the alcohol concentration increases;
an internal combustion engine stopped state determination device that determines whether the internal combustion engine is stopped;
an external electric power source connection determination device that determines whether the storage battery is connected to the external electric power source; and
a coolant pre-heating device that supplies electric power to the coolant heater until coolant temperature of the coolant reaches the demanded coolant temperature if the internal combustion engine is in the stopped state and the storage battery is connected to the external electric power source.
1 Assignment
0 Petitions
Accused Products
Abstract
A controller for the hybrid system includes: an alcohol concentration detector that detects alcohol concentration of fuel; a demanded coolant temperature setting device that sets a demanded coolant temperature higher as the alcohol concentration increases; an internal combustion engine stopped state determination device that determines whether an internal combustion engine is stopped; an external electric power source connection determination device that determines whether a storage battery is connected to an external electric power source; and a coolant pre-heating device that supplies electric power to a coolant heater until coolant temperature of the coolant reaches the demanded coolant temperature if the internal combustion engine is in the stopped state and the storage battery is connected to the external electric power source.
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Citations
8 Claims
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1. A controller for a hybrid system that includes:
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an internal combustion engine that uses a fuel mixed with alcohol; a coolant heater that heats coolant for the internal combustion engine when the heater is supplied with electric power; and a storage battery that supplies electric power to the coolant heater, and that is charged at least when the storage battery is connected to an external electric power source, the controller for the hybrid system comprising; an alcohol concentration detector that detects alcohol concentration of the fuel; a demanded coolant temperature setting device that sets a demanded coolant temperature higher as the alcohol concentration increases; an internal combustion engine stopped state determination device that determines whether the internal combustion engine is stopped; an external electric power source connection determination device that determines whether the storage battery is connected to the external electric power source; and a coolant pre-heating device that supplies electric power to the coolant heater until coolant temperature of the coolant reaches the demanded coolant temperature if the internal combustion engine is in the stopped state and the storage battery is connected to the external electric power source. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A controller for a hybrid system that includes:
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an internal combustion engine that uses a fuel mixed with alcohol; coolant heating means for heating coolant for the internal combustion engine when the heating means is supplied with electric power; and a storage battery that supplies electric power to the coolant heating means, and that is charged at least when the storage battery is connected to an external electric power source, the controller for the hybrid system comprising; alcohol concentration detection means for detecting alcohol concentration of the fuel; demanded coolant temperature setting means for setting a demanded coolant temperature higher as the alcohol concentration increases; internal combustion engine stopped state determination means for determining whether the internal combustion engine is stopped; external electric power source connection determination means for determining whether the storage battery is connected to the external electric power source; and coolant pre-heating means for supplying electric power to the coolant heating means until coolant temperature of the coolant reaches the demanded coolant temperature if the internal combustion engine is in the stopped state and the storage battery is connected to the external electric power source.
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Specification