Patent application number | Description | Published |
20090283075 | INTERNAL COMBUSTION ENGINE APPARATUS, VEHICLE INCLUDING INTERNAL COMBUSTION ENGINE APPARATUS, AND CONTROL METHOD OF INTERNAL COMBUSTION ENGINE APPARATUS - In performing purge control, an engine ECU | 11-19-2009 |
20090292449 | POWER OUTPUT APPARATUS, VEHICLE EQUIPPED WITH THE SAME, AND METHOD OF CONTROLLING POWER OUTPUT APPARATUS - In a power output apparatus, when the fuel vapor concentration is high and the target purge rate is high, an operating point on a purge priority operating line is selected as a target operating point of an engine. As a result, the intake manifold negative pressure greater than that when an operating point on an optimum fuel efficiency operating line is selected, so that the flow rate of purge gas released from a canister is increased. When the fuel vapor concentration does not fall within a high-concentration range, the necessity to immediately purge fuel vapor trapped in the canister into the intake pipe is low, and thus an operating point on the optimum fuel efficiency operating line is selected to keep the engine operating at high fuel efficiency. | 11-26-2009 |
20100069197 | CONTROL DEVICE OF A VEHICLE, CONTROL METHOD AND RECORDING MEDIUM BEARING A PROGRAM IMPLEMENTING THE METHOD - An ECU executes a program including a step of determining whether a manual shift mode is active or not, a step of calculating a lower limit revolution speed based on a vehicle speed and a gear selected by a driver when the manual shift mode is active, a step of changing a target idle revolution speed from a predetermined revolution speed to the lower limit revolution speed when a required engine torque is substantially zero and the engine is not in a fuel cut state, and a step of transmitting a control signal corresponding to the target idle revolution speed to the engine. | 03-18-2010 |
20100224153 | VARIABLE VALVE TIMING SYSTEM AND METHOD FOR CONTROLLING THE SAME - A variable valve timing system changes a valve phase by reducing an operation amount of an actuator at a speed reduction ratio that varies depending on a phase region. When the valve phase is outside a region in which the ratio of the amount of change in the phase with respect to the operation amount of the actuator is low, namely a high speed reduction ratio, the actuator may be operated due to, for example, a reaction force applied to a camshaft, and an undesirable valve phase change may result. Accordingly, when an engine stop command is possibly issued, the target phase value is restricted to a region more delayed than a phase restriction value set in consideration of the amount by which the valve timing can be changed from when an engine stop command is issued until when the engine is stopped. | 09-09-2010 |
20120150374 | CONTROL APPARATUS AND CONTROL METHOD FOR VEHICLE - An ECU that controls a plug-in hybrid vehicle starts an engine when a required power as a value obtained by subtracting a required discharge amount from a drive power is larger than a threshold during intermittent control in a CD mode, and stops the engine when the required power is smaller than a threshold. When intermittent control is being performed in the CD mode, the ECU limits the required discharge amount Pout to a relatively small value in a range where an engine coolant temperature is low, and sets the required discharge amount relatively large instead of imposing a limit thereon in a range where the engine coolant temperature is high. | 06-14-2012 |
20120221185 | VEHICLE AND VEHICLE CONTROL METHOD - A vehicle includes an internal combustion engine, a rotary electric machine that generates driving force for the vehicle, and a control unit that controls the internal combustion engine on the basis of a state of the vehicle. When the internal combustion engine is started in response to a request for the driving force, the control unit controls the internal combustion engine such that ignition timing of the internal combustion engine while a first mode is selected is later than the ignition timing while a second mode is selected. The vehicle is more likely to be driven using the rotary electric machine in a state where the internal combustion engine is stopped in the first mode than in the second mode. | 08-30-2012 |
20120310458 | VEHICLE, METHOD AND DEVICE FOR CONTROLLING ENGINE - A vehicle provided with a motor generator as a driving source includes a battery to supply electric power to the motor generator, an engine, and an ECU to control the vehicle in one of a CS mode and a CD mode in which opportunity for operation of the engine is limited compared to in the CS mode. The ECU controls the engine in accordance with a condition different from a condition used to control the engine in the CS mode, if the engine is started at least due to decrease in a state of charge of the battery while the vehicle is controlled in the CD mode. | 12-06-2012 |
20130151118 | AIR-FUEL RATIO CONTROL APPARATUS, AND CONTROL METHOD, OF HYBRID POWER UNIT - The invention relates to an air-fuel ratio control apparatus of a hybrid power unit that selectively executes a first mode in which a ratio of a period during which an internal combustion engine is operated is relatively small, and a second mode in which the ratio of the period during which the internal combustion engine is operated is relatively large. This air-fuel ratio control apparatus executes a target air-fuel ratio correction when a difference among air-fuel ratios in a plurality of combustion chambers exists or is greater than a predetermined difference. An air-fuel ratio correction amount that is a correction amount for the target air-fuel ratio by the target air-fuel ratio correction is set according to whether operational control of the internal combustion engine according to the first mode is being executed or whether operational control of the internal combustion engine according to the second mode is being executed. | 06-13-2013 |
20130226389 | HYBRID VEHICLE - In the case that an engine is started in a motor drive priority mode, a first motor and a second motor are controlled in a range of an input limit and an output limit of a battery, such that the first motor outputs a torque for motoring, and the second motor outputs the sum of a required torque and a torque of cancelling out a torque output from the first motor and applied to a driveshaft. Concurrently, the engine is controlled, such that the engine is started with increased fuel supply, compared with the case that the engine is started in a hybrid drive priority mode. | 08-29-2013 |
20130297137 | VEHICLE AND METHOD OF CONTROLLING VEHICLE - A vehicle includes an engine, a power storage device, a motor generator using electric power from the power storage device for generating driving force, and an ECU. The vehicle is capable of running with the operation mode selectively switched between the CS mode in which the vehicle runs utilizing the driving force from the engine and the motor generator, and the CD mode in which the vehicle runs preferentially utilizing the driving force from the motor generator in the state where the engine is stopped. When the OBD is performed for detecting a malfunction in the engine in the state where the CD mode is selected, the ECU keeps the operation mode being temporarily switched from the CD mode to the CS mode until the OBD is completed. | 11-07-2013 |
20130304291 | VEHICLE, METHOD AND DEVICE FOR CONTROLLING VEHICLE - A vehicle provided with a motor generator as a driving source includes an engine and a catalyst for purifying gas exhausted from the engine. The engine is controlled in one control mode of a CS mode and a CD mode in which opportunity for operation of the engine is limited compared to in the CS mode. In the CS mode, the temperature of the catalyst is increased to be equal to or higher than a prescribed activating temperature. The temperature of the catalyst is increased to be higher than the activating temperature before the control mode is changed from the CS mode to the CD mode. | 11-14-2013 |
20140311426 | CONTROL DEVICE OF A VEHICLE, VEHICLE INCLUDING CONTROL DEVICE, AND CONTROL METHOD OF VEHICLE - A vehicle includes at least one sensor generating a signal to control an operation of an internal combustion engine; and a control unit configured to store a control parameter to control an operation of the internal combustion engine, and to correct the control parameter based on an output of the at least one sensor. The control unit stops correcting the control parameter while the vehicle is at a halt, and the power generator is generating electric power by driving of the internal combustion engine. | 10-23-2014 |
20150032326 | FAILURE DIAGNOSIS APPARATUS OF HYBRID VEHICLE - A failure diagnosis apparatus comprises a controller that is configured to execute a failure diagnosis process of the internal combustion engine based on a predetermined diagnosis requirement. The diagnosis requirement in a case where engine-operation-electric-power supply is executed is made different from the diagnosis requirement in a case where engine-normal-operation is executed such that a failure of the internal combustion engine in the case where the engine-operation-electric-power supply is executed is less likely to be detected or the failure of the internal combustion engine is less likely to be recognized by a driver than in the case where the engine-normal operation is executed. | 01-29-2015 |