Hybrid vehicle and control method of hybrid vehicle
First Claim
1. A hybrid vehicle equipped with an internal combustion engine and with a motor that is capable of outputting power to an axle, said hybrid vehicle comprising:
- a power generation system that utilizes at least part of power from said internal combustion engine to generate electric power;
an accumulator that is chargeable and dischargeable to supply and receive electric power to and from said power generation system and said motor; and
a controller comprising;
a driving power demand setting module that sets a driving power demand in response to a driver'"'"'s manipulation;
a charge-discharge power setting module that sets a charge-discharge power to charge or discharge said accumulator according to a state of charge of said accumulator;
a compensated power setting module that sets a compensated power according to the setting of driving power demand;
a vehicle power demand setting module that sets a vehicle power demand required for said hybrid vehicle according to the setting of driving power demand, the setting of charge-discharge power, and the setting of compensated power;
an operation-stop determination module that determines whether said internal combustion engine is in operation or at a stop, based on the setting of vehicle power demand; and
a control module that controls said internal combustion engine, said power generation system, and said motor to output the vehicle power demand from said internal combustion engine and to output the driving power demand to said axle when said operation-stop determination module determines that said internal combustion engine is in operation, while controlling said internal combustion engine, said power generation system, and said motor to stop operation of said internal combustion engine and to output the driving power demand to said axle when said operation-stop determination module determines that said internal combustion engine is at a stop.
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Accused Products
Abstract
The technique of the invention sets a compensated power Pa and updates a charge-discharge power demand Pb* with the setting of compensated power Pa, when a driving power demand Pr* set according to an observed accelerator opening Acc is not less than a lower correction limit P3, which is less than an engine stop criterion value P2, but is less than an upper correction limit P4, which is greater than the engine stop criterion value P2 but is less than an engine start criterion value P1 (steps S220 and S230). The technique then calculates an engine power demand Pe* from the updated charge-discharge power demand Pb* (step S240) and controls an engine and two motors. When the driving power demand Pr* is less than the lower correction limit P3, the technique stops operation of the engine (S150) and drives the hybrid vehicle with the power of the motor (steps S170 to S190) When the driving power demand Pr* is not less than the upper correction limit P4, the technique calculates the engine power demand Pe* without setting the compensated power Pa and controls the engine and two motors.
37 Citations
14 Claims
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1. A hybrid vehicle equipped with an internal combustion engine and with a motor that is capable of outputting power to an axle, said hybrid vehicle comprising:
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a power generation system that utilizes at least part of power from said internal combustion engine to generate electric power;
an accumulator that is chargeable and dischargeable to supply and receive electric power to and from said power generation system and said motor; and
a controller comprising;
a driving power demand setting module that sets a driving power demand in response to a driver'"'"'s manipulation;
a charge-discharge power setting module that sets a charge-discharge power to charge or discharge said accumulator according to a state of charge of said accumulator;
a compensated power setting module that sets a compensated power according to the setting of driving power demand;
a vehicle power demand setting module that sets a vehicle power demand required for said hybrid vehicle according to the setting of driving power demand, the setting of charge-discharge power, and the setting of compensated power;
an operation-stop determination module that determines whether said internal combustion engine is in operation or at a stop, based on the setting of vehicle power demand; and
a control module that controls said internal combustion engine, said power generation system, and said motor to output the vehicle power demand from said internal combustion engine and to output the driving power demand to said axle when said operation-stop determination module determines that said internal combustion engine is in operation, while controlling said internal combustion engine, said power generation system, and said motor to stop operation of said internal combustion engine and to output the driving power demand to said axle when said operation-stop determination module determines that said internal combustion engine is at a stop. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A hybrid vehicle equipped with an internal combustion engine and with a motor that is capable of outputting power to an axle, said hybrid vehicle comprising:
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a power generation module that utilizes at least part of power from said internal combustion engine to generate electric power;
an electric accumulation module that is chargeable and dischargeable to supply and receive electric power to and from said power generation module and said motor;
a driving power demand setting module that sets a driving power demand in response to a driver'"'"'s manipulation;
a charge-discharge power setting module that sets a charge-discharge power to charge or discharge said electric accumulation module according to a state of charge of said electric accumulation module;
a compensated power setting module that sets a compensated power according to the setting of driving power demand;
a vehicle power demand setting module that sets a vehicle power demand required for said hybrid vehicle according to the setting of driving power demand, the setting of charge-discharge power, and the setting of compensated power;
an operation-stop determination module that determines whether said internal combustion engine is in operation or at a stop, based on the setting of vehicle power demand; and
a control module that controls said internal combustion engine, said power generation module, and said motor to output the vehicle power demand from said internal combustion engine and to output the driving power demand to said axle when said operation-stop determination module determines that said internal combustion engine is in operation, while controlling said internal combustion engine, said power generation module, and said motor to stop operation of said internal combustion engine and to output the driving power demand to said axle when said operation-stop determination module determines that said internal combustion engine is at a stop.
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10. A control method of a hybrid vehicle, said hybrid vehicle being equipped with an internal combustion engine, a motor that is capable of outputting power to an axle, a power generation system that utilizes at least part of power from said internal combustion engine to generate electric power, and an accumulator that is chargeable and dischargeable to supply and receive electric power to and from said power generation system and said motor,
said control method comprising the steps of: -
(a) setting a driving power demand in response to a driver'"'"'s manipulation;
(b) setting a charge-discharge power to charge or discharge said accumulator according to a state of charge of said accumulator;
(c) setting a compensated power according to the setting of driving power demand;
(d) setting a vehicle power demand as a total power including the setting of driving power demand, the setting of charge-discharge power, and the setting of compensated power;
(e) determining whether said internal combustion engine is in operation or at a stop, based on the setting of vehicle power demand; and
(f) controlling said internal combustion engine, said power generation system, and said motor to output the vehicle power demand from said internal combustion engine and to output the driving power demand to said axle when it is determined in said step (e) that said internal combustion engine is in operation, while controlling said internal combustion engine, said power generation system, and said motor to stop operation of said internal combustion engine and to output the driving power demand to said axle when it is determined in said step (e) that said internal combustion engine is at a stop. - View Dependent Claims (11, 12, 13, 14)
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Specification