Patent application number | Description | Published |
20110312469 | DRIVE FORCE CONTROL SYSTEM - A drive force control system includes a shifting demand judging means that judges whether or not a torque capacity of the clutch is relatively high, and a condition for changing the speed change ratio of the continuously variable transmission stepwise is satisfied; and a first shifting means, that reduces the torque capacity of the clutch before changing the speed change ratio of the continuously variable transmission, to synchronize a rotational speed of the internal combustion engine with an input speed of the continuously variable transmission to be attained after changing the speed change ratio thereof while changing the speed change ratio of the continuously variable transmission, and to increase the torque capacity of the clutch after changing the speed change ratio of the continuously variable transmission, when changing the speed change ratio of the continuously variable transmission stepwise. | 12-22-2011 |
20120035818 | DRIVING FORCE CONTROL DEVICE - A driving force control device for controlling engine torque generated by an internal combustion engine mounted on a vehicle and the engine revolution speed of the internal combustion engine based on the operation amount of driving force request operation on the vehicle to control the driving force of the vehicle is characterized by executing revolution fluctuation suppression control that suppresses fluctuations in engine revolution speeds when the operating point of the internal combustion engine in accordance with the engine torque and the engine revolution speed is within an optimum fuel economy range being a region set with a specified hysteresis width relative to an optimum fuel economy line of the internal combustion engine; accordingly, it is possible to improve the efficiency of the whole driving system. | 02-09-2012 |
20120035828 | DRIVE CONTROL DEVICE FOR A VEHICLE - A drive control device for a vehicle is preferably used for controlling an internal combustion engine and/or a transmission, for example. A total fuel consumption amount calculating unit calculates total fuel consumption amount by integrating fuel consumption when the vehicle travels a unit distance at a predetermined vehicle speed and a predetermined acceleration, with respect to a time axis in accordance with a target distance. A traveling pattern calculating unit calculates a traveling pattern indicating a relationship between a vehicle speed and an acceleration when the vehicle travels the target distance, based on the total fuel consumption amount. By performing the control based on the calculated traveling pattern, it is possible to optimize the total fuel consumption amount. Therefore, it becomes possible to improve the actual fuel consumption. | 02-09-2012 |
20140244123 | VEHICLE CONTROLLER - A vehicle controller includes a first abrupt deceleration determining unit (a rotation change rate determining unit, an ABS determining unit) configured to determine an abrupt deceleration state of a vehicle, and a second abrupt deceleration determining unit (a brake determining unit) having a required time for determining an abrupt deceleration shorter in comparison with that of the first abrupt deceleration determining unit, wherein any one of the first abrupt deceleration determining unit and the second abrupt deceleration determining unit is used for determining the abrupt deceleration of the vehicle | 08-28-2014 |
20150012159 | SPEED CHANGE CONTROL SYSTEM AND SPEED CHANGE CONTROL METHOD FOR HYBRID VEHICLE - A speed change control system for a hybrid vehicle comprised of a first motor-generator, a differential mechanism that distributes a power of an engine to the first motor-generator and to an output member and that changes an engine speed in accordance with a speed of the first motor-generator, and a second motor-generator that exchanges a torque with any of wheels. The speed change control system comprises: a first power control means that outputs a command for changing an engine power in a direction to expedite a change in an engine speed, at the beginning of a speed change for changing the engine speed stepwise; a first speed control means that continues controls of the first and the second motor-generators as before the speed change, during a period from a point at which the first power control means outputs the command for changing the engine power to a point at which a response delay of the engine elapses; a second speed control means that controls the first motor-generator in a manner such that the engine speed is changed in a direction to be changed by the change in the engine power, after a lapse of the response delay of the engine; and a second power control means that outputs a command for changing the engine power to a power to be achieved after the speed change, when the engine speed is changed substantially to a target speed to be achieved after the speed change. | 01-08-2015 |
20150127200 | DRIVING FORCE CONTROL SYSTEM FOR VEHICLE - A driving force control system for a vehicle having a mechanism for changing an engine speed continuously. The driving force control system basically controls said mechanism in a manner such that the engine speed is adjusted to optimize fuel economy. The driving force control system is configured to determine an index representing a demand to enhance agility of behavior of the vehicle based on an actual behavior of the vehicle or an amount of operation carried out by a driver to cause said behavior. An upper limit value of the engine speed of the case in which a drive demand is increased is determined on the basis of the index, and the upper limit value is set to the higher value with an increase in the index representing the demand to enhance agility of behavior of the vehicle. | 05-07-2015 |