HYBRID VEHICLE AND CONTROL METHOD THEREOF
First Claim
1. A hybrid vehicle comprising:
- an internal combustion engine;
a purifying unit including a catalyst that purifies exhaust gas exhausted from the internal combustion engine;
a catalyst temperature acquisition device that acquires a temperature of the catalyst;
an electric power-mechanical power input output structure connected to a predetermined axle and an engine shaft of the internal combustion engine, the electric power-mechanical power input output structure capable of generating electric power through the use of at least part of power from the internal combustion engine and inputting and outputting power to the axle with input and output of electric power;
a motor capable of inputting and outputting power to the axle or another axle that is different from the axle;
an accumulator capable of supplying and receiving electric power from electric power-mechanical power input output structure and the motor;
a residual capacity acquisition module that acquires a residual capacity of the accumulator;
a catalyst warm up determination module that determines whether a catalyst warm up operation of the internal combustion engine that facilitates an activation of the catalyst is to be executed or not based on the acquired temperature of the catalyst and the acquired residual capacity upon a system startup;
a forced charging determination module that determines whether a forced charging of the accumulator with an idling of the internal combustion engine is to be executed or not based on the acquired temperature of the catalyst, the acquired residual capacity and an estimated intake air amount upon the idling of the internal combustion engine when the catalyst warm up determination module determines that the catalyst warm up operation is not to be executed; and
a control module that controls the internal combustion engine, the electric power-mechanical power input output structure and the motor so that the catalyst warm up operation is executed when the catalyst warm up determination module determines that the catalyst warm up operation is to be executed, the control module controlling the internal combustion engine, the electric power-mechanical power input output structure and the motor so that the forced charging is executed when the forced charging determination module determines that the forced charging is to be executed.
1 Assignment
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Accused Products
Abstract
Upon a system startup, a hybrid vehicle 20 determines whether a catalyst warm up operation of an engine 22 is to be executed or not based on a catalyst bed temperature Tcat of an exhaust gas purifying catalyst 141 and a state of charge SOC of a battery 50 (S110, S140) and determines whether a forced charging of the battery 50 with an idling of the engine 22 is to be executed or not based on the catalyst bed temperature Tcat, the state of charge SOC and an estimated intake air amount GAidl upon the idling of the engine 22 when the catalyst warm up operation is not to be executed, then controls the engine 22, motors MG1 and MG2 in accordance with determination results (S130, S210).
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Citations
16 Claims
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1. A hybrid vehicle comprising:
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an internal combustion engine; a purifying unit including a catalyst that purifies exhaust gas exhausted from the internal combustion engine; a catalyst temperature acquisition device that acquires a temperature of the catalyst; an electric power-mechanical power input output structure connected to a predetermined axle and an engine shaft of the internal combustion engine, the electric power-mechanical power input output structure capable of generating electric power through the use of at least part of power from the internal combustion engine and inputting and outputting power to the axle with input and output of electric power; a motor capable of inputting and outputting power to the axle or another axle that is different from the axle; an accumulator capable of supplying and receiving electric power from electric power-mechanical power input output structure and the motor; a residual capacity acquisition module that acquires a residual capacity of the accumulator; a catalyst warm up determination module that determines whether a catalyst warm up operation of the internal combustion engine that facilitates an activation of the catalyst is to be executed or not based on the acquired temperature of the catalyst and the acquired residual capacity upon a system startup; a forced charging determination module that determines whether a forced charging of the accumulator with an idling of the internal combustion engine is to be executed or not based on the acquired temperature of the catalyst, the acquired residual capacity and an estimated intake air amount upon the idling of the internal combustion engine when the catalyst warm up determination module determines that the catalyst warm up operation is not to be executed; and a control module that controls the internal combustion engine, the electric power-mechanical power input output structure and the motor so that the catalyst warm up operation is executed when the catalyst warm up determination module determines that the catalyst warm up operation is to be executed, the control module controlling the internal combustion engine, the electric power-mechanical power input output structure and the motor so that the forced charging is executed when the forced charging determination module determines that the forced charging is to be executed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A control method of a hybrid vehicle including an internal combustion engine, a purifying unit including a catalyst that purifies exhaust gas exhausted from the internal combustion engine, an electric power-mechanical power input output structure connected to a predetermined axle and an engine shaft of the internal combustion engine, the electric power-mechanical power input output structure capable of generating electric power through the use of at least part of power from the internal combustion engine and inputting and outputting power to the axle with input and output of electric power, a motor capable of inputting and outputting power to the axle or another axle that is different from the axle and an accumulator capable of supplying and receiving electric power from electric power-mechanical power input output structure and the motor, the method comprising the steps of:
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(a) determining whether a catalyst warm up operation of the internal combustion engine that facilitates an activation of the catalyst is to be executed or not based on a temperature of the catalyst and a residual capacity of the accumulator; (b) determining whether a forced charging of the accumulator with an idling of the internal combustion engine is to be executed or not based on the temperature of the catalyst, the residual capacity of the accumulator and an estimated intake air amount upon the idling of the internal combustion engine when the Step (a) determines that the catalyst warm up operation is not to be executed; and (c) controlling the internal combustion engine, the electric power-mechanical power input output structure and the motor so that the catalyst warm up operation is executed when the Step (a) determines that the catalyst warm up operation is to be executed, and controlling the internal combustion engine, the electric power-mechanical power input output structure and the motor so that the forced charging is executed when the Step (b) determines that the forced charging is to be executed. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification