Controller for hybrid vehicle

A control system for a hybrid vehicle provided at least with a hybrid engine composed of an engine which is equipped at least with intake air volume regulating means which is provided on an inlet pipe to open and close a throttle valve which adjusts the volume of air drawn into a combustion chamber, and an electronically controlled fuel injection unit;

• a power converting means which includes at least a first rotary electric unit for deciding the rpm of the engine and a second rotary electric unit for deciding the driving force of a vehicle and which is connected to the output shaft of said engine;
• and electricity storing means;
• said control system for a hybrid vehicle comprising:
• an engine controller which controls said intake air volume regulating means and electronically controlled fuel injection unit, an inverter which drives said respective rotary electric units, and a hybrid controller which controls said hybrid system;
• wherein said hybrid controller calculates a vehicle driving torque command value of said hybrid vehicle according to the operational information on at least an accelerator pedal or a brake pedal and a shift lever, calculates a vehicle driving power demand value based on the vehicle driving torque command value and the vehicle speed of the hybrid vehicle, and performs the output of the vehicle driving power demand value to said engine controller;
• said engine controller calculates an engine rpm command value based on said vehicle driving power demand value and the characteristics of said engine stored in advance, calculates the regulating amount of said intake air volume regulating means, controls said intake air volume regulating means according to the regulating amount, controls said electronically controlled fuel injection unit according to the intake air volume decided by the control of at least the intake air volume regulating means, and performs the output of said engine rpm command value to said hybrid controller;
• said hybrid controller calculates a first torque command value for said first rotary electric unit according to said engine rpm command value and the information related to the rpm of said engine and calculates a second torque command value for said second rotary electric unit according to said first torque command value and said vehicle driving torque command value, and performs the output of said first and second torque command values to said inverter;
• and
• said inverter controls the torques of said first and second rotary electric units according to said first and second torque command values.

A controller for a hybrid vehicle having:

• an engine including a combustion chamber;
• an engine controller for controlling intake air volume regulating means which regulates the volume of air to be drawn into said combustion chamber, and an electronically controlled fuel injection device which controls fuel injection amount, respectively;
• power converting means which is connected to said engine and which has a first rotary electric unit for deciding the rpm of the engine and a second rotary electric unit for deciding the driving force of a vehicle;
• an inverter which drives said first and second rotary electric units;
• and
• electricity storing means electrically connected to said inverter;
• said controller for a hybrid vehicle comprising:
• vehicle driving torque command value calculating means which calculates a vehicle driving torque command value of said hybrid vehicle according to the operational information on at least an accelerator pedal or a brake pedal and a shift lever;
• engine rpm command value calculating means which calculates an engine rpm command value from said calculated vehicle driving torque command value;
• and
• torque controlling means which calculates a first torque command value for said first rotary electric unit according to said engine rpm command value and the information related to the rpm of said engine and calculates a second torque command value for said second rotary electric unit according to said first torque command value and said vehicle driving torque command value, performs the output of said first and second torque command values to said inverter, and controls the torques of said first and second rotary electric units according to said first and second torque command values;
• wherein, when the rpm of said first rotary electric unit is in the vicinity of zero, the first torque command value to said first rotary electric unit is changed to cause a slight change in the rpm of said first rotary electric unit via said inverter.

A controller for a hybrid vehicle having:

• an engine including a combustion chamber;
• an engine controller for controlling intake air volume regulating means which regulates the volume of air to be drawn into said combustion chamber, and an electronically controlled fuel injection unit which controls fuel injection amount, respectively;
• power converting means which is connected to said engine and which has a first rotary electric unit for deciding the rpm of the engine and a second rotary electric unit for deciding the driving force of a vehicle;
• an inverter which drives said first and second rotary electric units;
• and
• electricity storing means electrically connected to said inverter;
• said controller for a hybrid vehicle comprising:
• vehicle driving torque command value calculating means which calculates a vehicle driving torque command value of said hybrid vehicle according to the operational information on at least an accelerator pedal or a brake pedal and a shift lever and the vehicle speed of the hybrid vehicle;
• vehicle driving power demand value calculating means which calculates the vehicle driving power demand value according to said calculated vehicle driving torque command value and the vehicle speed;
• engine rpm command value calculating means which calculates an engine rpm command value from said calculated vehicle driving power demand value;
• and
• torque controlling means which calculates a first torque command value for said first rotary electric unit according to said engine rpm command value and the information related to the rpm of said engine and calculates a second torque command value for said second rotary electric unit according to the first torque command value and said vehicle driving torque command value, performs the output of said first and second torque command values to said inverter, and controls the torques of said first and second rotary electric units according to said first and second torque command values;
• wherein, when the rpm of said first rotary electric unit is in the vicinity of zero, the first torque command value to said first rotary electric unit is changed to cause a slight change in the rpm of said first rotary electric unit via said inverter.

A controller for a hybrid vehicle having:

• an engine including a combustion chamber;
• an engine controller for controlling intake air volume regulating means which regulates the volume of air to be drawn into said combustion chamber, and an electronically controlled fuel injection device which controls fuel injection amount, respectively;
• power converting means which is connected to said engine and which has a first rotary electric unit for deciding the rpm of the engine and a second rotary electric unit for deciding the driving force of a vehicle;
• an inverter which drives said first and second rotary electric units;
• and
• electricity storing means electrically connected to said inverter;
• said controller for a hybrid vehicle comprising:
• vehicle driving torque command value calculating means which calculates a vehicle driving torque command value of said hybrid vehicle according to the operational information on at least an accelerator pedal or a brake pedal and a shift lever and the vehicle speed of the hybrid vehicle;
• vehicle driving power demand value calculating means which calculates the vehicle driving power demand value according to said calculated vehicle driving torque command value and the vehicle speed;
• engine rpm command value calculating means which calculates an engine rpm command value from said calculated vehicle driving power demand value;
• and
• torque controlling means which calculates a first torque command value for said first rotary electric unit according to said engine rpm command value and the information related to the rpm of said engine and calculates a second torque command value for said second rotary electric unit according to the first torque command value and said vehicle driving torque command value, performs the output of said first and second torque command values to said inverter, and controls the torques of said first and second rotary electric units according to said first and second torque command values;
• wherein, when said shift lever has been selected to a reverse state, said engine is set to an idle state, said first torque command value is set to zero, and said second command value is set to said vehicle driving torque command value.

A controller for a hybrid vehicle applied to a hybrid vehicle provided with an engine, power converting means which is connected to the engine and which includes a first rotary electric unit for deciding engine rpm and a second rotary electric unit for deciding the driving force of the vehicle, an inverter for driving said first and second rotary electric units, and an electricity storing unit electrically connected to the inverter;

• wherein the output torque of said engine is controlled according to vehicular drive information, and the torque values for said first and second rotary electric units are controlled according to the torque control amount and the target rpm of said engine corresponding to the characteristics of said engine;
• said controller for a hybrid vehicle comprising:
• transient state detecting means for detecting a vehicle transient state corresponding to the acceleration or deceleration of the vehicle;
• and
• torque correcting means which corrects the torque command value for said first rotary electric unit by decreasing it and also corrects the torque command value for said second rotary electric unit by increasing it if the vehicle is being accelerated, while it corrects the torque command value for said first rotary electric unit by increasing it and also corrects the torque command value for said second rotary electric unit by decreasing it if the vehicle is being decelerated, according to a detection result of said transient state.

A controller for a hybrid vehicle applied to a hybrid vehicle provided with an engine, power converting means which is connected to the engine and which includes a first rotary electric unit for deciding engine rpm and a second rotary electric unit for deciding the driving force of the vehicle, an inverter for driving said first and second rotary electric units, and an electricity storing unit electrically connected to the inverter;

• wherein the output torque of said engine is controlled according to vehicular drive information, and the torque values for said first and second rotary electric units are controlled according to the torque control amount of the engine and the target rpm of the engine corresponding to the characteristics of the engine;
• said controller for a hybrid vehicle comprising:
• band restricting means which captures an actual value of engine rpm and restricts a predetermined frequency band based on the torque ripple of said engine on the captured actual rpm;
• and
• torque command value calculating means for calculating the torque command value of said first rotary electric unit by employing said restricted actual rpm.

A controller for a hybrid vehicle applied to a hybrid vehicle provided with an engine, power converting means which is connected to the engine and which includes a first rotary electric unit for deciding engine rpm and a second rotary electric unit for deciding the driving force of the vehicle, an inverter for driving said first and second rotary electric units, and an electricity storing unit electrically connected to the inverter;

• wherein the output torque of said engine is controlled according to vehicular drive information, the torque command values for said first and second rotary electric units are calculated according to the torque control amount of the engine and the target rpm of the engine corresponding to the characteristics of the engine, and the respective rotary electric units are controlled by the calculated torque command values;
• said controller for a hybrid vehicle comprising:
• energy balance calculating means for calculating the energy balance in a hybrid control system from first information on said electricity storing unit and second information on said first and second rotary electric units;
• and
• failure determining means for determining the presence of a failure in said hybrid control system according to said calculated energy balance.

A controller for a hybrid vehicle applied to a hybrid vehicle which is provided with an engine, power converting means which is connected to said engine and which includes a first rotary electric unit for deciding engine rpm and a second rotary electric unit for deciding the driving force of said vehicle, an inverter for driving said first and second rotary electric units, and an electricity storing unit electrically connected to said inverter;

• wherein the output torque of said engine is controlled according to vehicular drive information, the torque command values for said first and second rotary electric units are calculated according to the torque control amount of said engine and the target rpm of said engine corresponding to the characteristics of said engine, and said respective rotary electric units are controlled according to said calculated torque command values;
• said controller for a hybrid vehicle comprising:
• startup controlling means for controlling the drive of said first rotary electric unit according to a startup torque command value which is determined based on engine rpm at the time of startup of said engine and which decreases as said rpm increases;
• and
• complete explosion determining means which determines that the complete explosion in said engine has occurred if said startup torque command value is smaller than a predetermined complete explosion judgment value.