Patent application number | Description | Published |
20080275601 | MODE CHANGE CONTROL SYSTEM FOR HYBRID VEHICLE - In a hybrid vehicle in which a mode change between an electric drive mode and a hybrid drive mode is carried out based on information concerning an operating condition and a driving status, an impairment of operability due to a change of the drive mode at a reverse travel of the vehicle is prevented. Upon a start of the reverse travel, the drive mode before the start of the reverse travel is continued at the start of the reverse travel. | 11-06-2008 |
20080293538 | HYBRID VEHICLE DRIVE CONTROL APPARATUS AND METHOD - A hybrid vehicle drive control apparatus and method for a vehicle including an engine and a motor-generator are taught herein. When a drive mode requested by a driver is a power mode that attaches greater importance to an acceleration performance than to fuel consumption efficiency, a power mode engine torque that is larger than an optimum fuel consumption efficiency engine torque is used as a target engine torque of the engine. | 11-27-2008 |
20120185119 | HYBRID VEHICLE - A hybrid vehicle includes an engine, a motor, the engine and the motor being driving sources, a first traveling mode in which the vehicle is driven utilizing an output of the engine, and a second traveling mode in which the vehicle is driven through an output of the motor with the engine stopped. The hybrid vehicle further includes an air density detecting section configured to detect an air density of an environment under which the vehicle travels and, in a case where the detected air density is reduced with respect to a standard air density, the motor output in the second traveling mode is reduced with respect to the motor output in a standard air density such that a driving force of the vehicle in the second traveling mode when the traveling mode is switched approaches the driving force of the vehicle in the first traveling mode. | 07-19-2012 |
20130066508 | HYBRID VEHICLE ACCELERATOR PEDAL DEPRESSING FORCE CONTROL DEVICE - An accelerator pedal depression force control apparatus for a hybrid vehicle is arranged to increase the depression force of the accelerator pedal than a base depression force when the accelerator opening degree becomes larger than an accelerator opening degree threshold value, and arranged to set a the first accelerator opening degree based on an accelerator opening degree which switches from a first running mode in which the vehicle runs by driving only the electric motor, to a second running mode in which the internal combustion engine is driven, to set a second accelerator opening degree based on the accelerator opening degree by which the vehicle can run at a constant speed at each vehicle speed, and to set the accelerator opening degree threshold value as a larger one of the first accelerator opening degree and the second accelerator opening degree. | 03-14-2013 |
20130124026 | APPARATUS AND METHOD FOR CONTROLLING HYBRID VEHICLE - Compatibility between prevention of hunting of engine start and stop and improvement of fuel consumption is achieved during traveling with mode transitions. An apparatus for controlling a hybrid vehicle includes an engine, a motor-generator, a first clutch and a mode transition control means. The motor-generator is disposed in a drive system (power train) between engine and tire wheels to perform a start of the engine and drive for the tire wheels according to motor acceleration and power generation according to regeneration. The first clutch switches between an HEV mode and an EV mode. Mode transition control means implements a delay time from a time at which an engine stop allowance condition is established to a time at which a mode transition from the HEV mode to the EV mode is started in a high vehicle speed area that is higher than a delay time in another vehicle speed area. | 05-16-2013 |
20130226385 | DRIVING TORQUE CONTROL DEVICE FOR HYBRID VEHICLE - A driving torque control device for a hybrid vehicle has an engine torque estimation unit configured to estimate an engine torque by compensating for a retardation caused by a delay filter in an engine torque instruction value, and a retardation factor selection unit configured to select, as a retardation factor indicating a retardation degree of the delay filter, any one of an increase-side retardation factor for a case where the engine torque instruction value increases and a decrease-side retardation factor for a case where the engine torque instruction value decreases. The retardation factor selection unit performs switching between the increase-side retardation factor and the decrease-side retardation factor in a case where a difference between the engine torque estimation value and the engine torque instruction value as a filter input value is equal to or smaller than a predetermined value. | 08-29-2013 |
20140303822 | CONTROL DEVICE FOR HYBRID VEHICLE - A hybrid vehicle control device includes an engine start control section that begins an engine start control when a mode transition request to change to a hybrid vehicle mode occurs due to an accelerator operation while traveling in an electric vehicle mode in which a first clutch is opened. The engine start control section begins engagement of the first clutch after slip engagement of a second clutch is determined and starting the engine using a motor as a starter motor. A negative slip detecting/predicting section detects/predicts if a slip polarity of the second clutch has transitioned from positive slip to negative slip after the engine start control has begun and before the engine has started. A forced backup start control section starts the engine with the second clutch in a fully engaged state when a transition of the second clutch to negative slip has been detected or predicted. | 10-09-2014 |
20150019061 | CONTROL DEVICE FOR HYBRID VEHICLE - A control device for a hybrid vehicle is configured to enter a driving mode in which a preset engine-start condition is met, and is configured to enter electric vehicle mode when a preset engine-stop condition is met, and includes an engine-start-condition-controlling device which, during travel in the electric vehicle mode, in the event that an electric vehicle travel zone expansion condition that has been set on the basis of vehicle speed VSP and torque demand information reflective of demand by the driver, and that expands the travel zone in the electric vehicle mode, is met, changes the engine-start condition from a baseline start condition, to an expansion engine-start condition for expanding the travel zone in the electric vehicle mode, doing so for the duration of a prescribed time thereafter. | 01-15-2015 |