Abstract: An ECU executes a program including the steps of: setting a creep torque reflection ratio; if brake is applied and the vehicle is currently stopped, updating the creep torque reflection ratio to 0; if brake is not applied and despite that the brake fluid's pressure is larger than a hydraulic pressure value, determining that brake hold control is currently exerted, and reducing the creep torque reflection ratio, as based on a map having the brake fluid's pressure as a parameter, to update the creep torque reflection ratio.

Abstract: A plug-in hybrid electric vehicle system employs an improved integrated propulsion device, a drive system and battery management system that is operable to be used in the commercial vehicle business. The vehicle system is operable to provide optimal performance for particular fleet applications by taking into consideration driving patterns and load demands. The vehicle system also provides a drive for auxiliary equipment for work vehicles and driver selectable driving modes for when a vehicle encounters different driving demands.

Abstract: A control apparatus for a vehicle is provided for a vehicle that has a normal mode and a power mode as vehicle driving characteristics. The control apparatus includes a continuously variable transmission mechanism that steplessly changes a speed ratio when rotational driving force of an engine output shaft is transmitted to a rotating output shaft; and a control portion that controls the continuously variable transmission mechanism such that, when a rotation speed is increased to a target rotation speed and a required output of an internal combustion engine when the power mode is selected is the same as when the normal mode is selected, the rate of increase in the rotation speed is greater when the power mode is selected than when the normal mode is selected.

Abstract: A controller for a power transmission system that uses an engine and a motor as driving force sources to transmit power and that includes a transmission unit is provided. The transmission unit has a plurality of engagement devices and establishes a plurality of gears having different speed ratios by the frictional engagement devices. The transmission unit is arranged downstream of the driving force sources. The controller includes a torque transmission capacity setting unit that, when the transmission unit shifts gears, varies torque transmission capacities of the frictional engagement devices on the basis of an operating state of the motor and an operating state of the engine.

Abstract: A vehicle includes an engine, a first MG, a second MG, a PCU, a battery, and an EHC. The PCU is connected to the battery via a positive line and a negative line. The PCU is connected to the first MG via a 3-phase power line. The PCU is connected to the second MG via a 3-phase power line. The EHC has one end connected to a positive branch line branching off from a W-phase power line among the 3-phase power lines between the PCU and first MG. The EHC has the other end connected to a negative branch line branching off from a negative line between the PCU and battery.

Abstract: An engine is mechanically coupled to a transmission device, the transmission device operative to transfer mechanical power between the engine and a second power generating device and an output member. A method for controlling the engine includes monitoring an operator demand for power, selecting a preferred engine state, determining a preferred engine torque input to the transmission device when operating in the preferred engine state based upon the operator demand for power, determining constraints on the engine torque input to the transmission device based upon a capacity of the transmission device to react the engine torque input, and commanding operation of the engine to the preferred engine state and commanding the engine torque input to the transmission device based upon the preferred engine torque input and the constraints on the engine torque input.

Abstract: A combined power transmission and drive unit for use in hybrid systems between a first engine and a transmission device, broadly including at least an input connectable with the engine, a power transmission device by which the output is connected with a transmission input shaft, a device for selectively at least interrupting/establishing the power flow to the input of the power transmission device and an electric machine including at least one rotor that is connected non-rotatably with the input of the power transmission device. Furthermore, the invention relates to a hybrid system, including a first engine and a combined power transmission and drive unit connected downstream of the engine.

Abstract: Systems and methods for improving operation of a hybrid vehicle are presented. In one example, driveline operation may be adjusted in response to operating the hybrid vehicle in a four wheel drivel low gear range. The approaches may improve vehicle drivability and reduce driveline degradation.

Abstract: Systems and methods for improving operation of a hybrid vehicle are presented. In one example, an engine is started and idled before engine torque is required so that driveline torque response may be improved.

Abstract: Systems and methods for improving operation of a hybrid vehicle are presented. In one example, an engine is accelerated to a speed of a driveline integrated starter/generator before the engine is coupled to the driveline integrated starter/generator.

Abstract: Systems and methods for improving operation of a hybrid vehicle are presented. In one example, entry conditions for entering a driveline sailing mode are described. Driveline sailing mode may improve driveline torque response and vehicle drivability.

Abstract: A system and a method for controlling a hybrid vehicle powertrain during a change from a two-wheel drive mode to a four-wheel drive mode is provided. In response to a request to couple the second pair of wheels to the powertrain, a driveline controller commands an increased torque from the electric motor to be applied to the first pair of wheels The increased torque from the electric motor is based on an AWD engagement torque of the second pair of wheels to counteract an engagement torque of a second pair of drive wheels before changing from the two-wheel drive mode to the four-wheel drive mode.

Abstract: Systems and methods for improving operation of a hybrid vehicle are presented. In one example, a driveline may selectively enter a sailing mode to provide quick driveline torque response with reduced impact on fuel economy.

Abstract: The invention relates to a hybrid drive, comprising an internal combustion engine, an electric machine and a torque superposition device, by means of which a torque supplied by the internal combustion engine can be superposed on a torque supplied by the electric machine, wherein the torque superposition device has a first and a second torque input and a torque output. The electric machine is coupled to the first torque input via a first transmission device, and the internal combustion engine is coupled to the second torque input via a second transmission device.

Abstract: Systems and methods for improving operation of a hybrid vehicle are presented. In one example, driveline gear lash gear tooth to gear tooth impact may be reduce via adjusting operation of an electric machine.

Abstract: Systems and methods for improving operation of a hybrid vehicle are presented. In one example, driveline operating modes may be adjusted in response to driving surface conditions. The approaches may improve vehicle drivability and reduce driveline degradation.

Abstract: A vehicle includes an engine, an electric machine, a transmission, and at least one controller. The at least one controller, in response to a gear shift of the transmission that causes a speed of the engine to exceed a predetermined speed, commands a change in current to the electric machine such that the speed of the engine decreases to a target speed to avoid engine flare.

Abstract: A hybrid vehicle is provided with an electric transmission operatively connected to a first axle and an electric drive module operatively connected to a second axle. A transmission ratio of a differential gear set and a final drive of the electric transmission are selected so that a torque ratio of torque of the first axle over the torque of the engine is that at which any working chamber of the engine that is operated to expand the working fluid can operate without throttling, without torque of the engine torque exceeding a torque necessary to propel the vehicle at a steady vehicle speed, and with the second electric machine freewheeling.

Abstract: Methods and systems are provided for raising the speed of a hybrid electric vehicle operating in an electric-only mode. During conditions when the vehicle is driven only by an electric motor, vehicle speed may be raised by spinning the engine unfueled using power from a system battery, while adjusting valve operation to reduce engine pumping losses. In this way, vehicle speed may be raised more efficiently and without damaging rotating transmission components.

Abstract: A control device for a vehicular drive system is disclosed as including reverse drive for suppression means operative to preclude output member, such as an output shaft and drive wheels, of an automatic transmission portion from inputting a reverse drive force to a differential portion. This prevents a power transmitting member from rotating in a direction opposite to a rotational direction of the same with a running position being set. This suppresses a first electric-motor rotation speed, determined with an engine rotation speed and a power transmitting member rotation speed based on the relationship on mutually relative rotation speeds in the differential portion, from increasing to a high level. This results in improved durability of a first electric-motor.

Abstract: A control apparatus for a vehicular power transmitting system includes a shifting-point changing portion configured to change a shifting point at which a determination to perform a shifting action of a transmission portion is made, such that a shifting portion is changed according to a shifting response of the transmission portion. Alternatively, the control apparatus includes a shift-control start-point changing portion configured to change a shift-control start point at which the determination to perform the shifting action is made, such that the shift-control start point is changed according to the shifting response of the transmission portion, and a compulsory shift-control starting portion configured to make the determination when an operating point of a differential portion electric motor has reached the shift-control start point.

Abstract: A bicycle control apparatus is configured to control a bicycle having a transmission and a drive assistance electric motor that drives a wheel. The bicycle control apparatus includes a pedaling force detector and a controller. The pedaling force detector detects a pedaling force. The controller includes a control section that controls the drive assistance electric motor according to a pedaling force detected by the pedaling force detector. The control section increases a ratio of an output of the drive assistance electric motor with respect to the pedaling force upon completion of a downshift of the transmission, and subsequently decreasing the ratio of the output of the drive assistance electric motor with respect to the pedaling force.

Abstract: A dual-powered utility vehicle is provided that includes a gasoline engine and an electrical motor. The gasoline engine is configured to drive at least a first wheel at first revolutions per minute. The electrical motor is configured to drive at least a second wheel at second revolutions per minute. A throttle is configured to affect the gasoline engine and the electric motor separately, or both the gasoline engine and electric motor simultaneously.

Abstract: A control apparatus for a hybrid vehicle to permit charging of an electric-energy storage device with an electric energy supplied from an external electric power source provided outside said hybrid vehicle, while said hybrid vehicle is held stationary; and to operate an engine for operating a lubricant supply device to supply a predetermined amount of the lubricant, during charging of said electric-energy storage device by said external electric power source, irrespective of whether a count of said motor running counter has reached a predetermined upper limit, and to reset said motor running counter.

Abstract: A control device of a hybrid vehicle including an engine; an automatic transmission placed on a power transmission path between the engine and wheels, having a first friction engagement element engaged in a forward range and a second engagement element engaged in a reverse range based on a hydraulic pressure generated while the engine is stopped; and a rotary electric machine capable of driving the wheels without using the power transmission path. The rotary electric machine is driven when a shift range is the forward range or the reverse range while the internal combustion engine is stopped, and the driving of the rotary electric machine is restrained for a set time after the shift range is changed from the forward range to the reverse range or vice versa while the engine is stopped.

Abstract: According to the embodiment, the electric motor controller is configured to perform control such that a free-state limit torque after switching from the ring-locking state to the free state is set to a value larger in absolute value than an upper limit torque of the first electric motor or the second electric motor determined by electric motor specifications at the time of switching from the ring-locking state to the free state or is set to a value larger in absolute value than a restricted state limit torque at the time of switching from the ring-locking state to the free state. The restricted state limit torque is a limit torque of the first electric motor or the second electric motor, and the electric motor controller performs control such that the torque generated by the first electric motor or the second electric motor is less than the free-state limit torque.

Abstract: An apparatus comprises a changeover mechanism which is able to change a connection state of an electric motor output shaft to any one from alternatives consisting of “an IN-Connection State” in which a power transmission path is provided between a transmission input shaft and the electric motor output shaft, “an OUT-Connection State” in which a power transmission path is provided between the transmission output shaft and the electric motor output shaft, and “a neutral connection state” in which no transmission path therebetween is provided. The changeover is carried out based on a combination (area) of a vehicle speed V and a required driving torque T. As for the changeover, an (first, second) IN-connection area is more enlarged and the OUT-Connection area and the neutral connection area are more narrowed, as a temperature of a lubricating oil is lower.

Abstract: A system and method for controlling a hybrid electric vehicle powertrain having an engine, a generator, and a motor connected via a planetary gear set to detect lockup in the planetary gear set and control the powertrain in response. When torque is distributed in an electric mode of operation with the engine disabled, the generator is disabled based at least upon a difference between actual generator speed and an expected generator speed exceeding a threshold, indicating a lockup in the planetary gear set. When the engine is activated and distributes torque through the powertrain, the engine and the generator are disabled based at least upon a difference between engine acceleration and an expected engine acceleration exceeding a first threshold, and a difference between engine speed and ring gear speed being less than a second threshold.

Abstract: A vehicle propulsion system includes an electric machine (EM) configured to generate an unconditioned output. The vehicle propulsion system also includes a continuously variable transmission (CVT) having an input side and an output side, the input side mechanically coupled to the EM and configured to receive the unconditioned output from the EM and produce a conditioned output on the output side. A fixed-ratio transmission is mechanically coupled to the output side of the CVT and configured to receive the conditioned output from the CVT and produce a reconditioned output.

Abstract: In a system in which two or motors drive a common load, respective continuously variable transmissions are installed between each individual motor and a respective individual load in the form of a wheel group, the respective continuously variable transmissions providing a differential speed drive operation.

Abstract: A method for controlling a hybrid drive of a vehicle, which includes at least one internal combustion engine and at least one electric machine, having a first clutch situated between the electric machine and the drive train of the vehicle and a second clutch situated between the electric machine and the internal combustion engine. Performance parameters of the hybrid drive are controlled as a function of the driver's intent.

Abstract: The invention relates to a hybrid drive-train of a motor vehicle (1) equipped with a mechanical all-wheel drive, said drive-train comprising a combustion engine (5) which can be drive-connected to two axles (5) by means of a transmission (6), and a transversally installed electric machine arrangement (10). In order to improve the hybrid drive-train, particularly with regard to an operational mode that is highly dynamic, the electric machine arrangement is arranged approximately central in relation to the transverse direction of the vehicle.

Abstract: A control apparatus for a vehicular power transmitting system includes a shifting-point changing portion configured to change a shifting point at which a determination to perform a shifting action of a transmission portion is made, such that a shifting portion is changed according to a shifting response of the transmission portion. Alternatively, the control apparatus includes a shift-control start-point changing portion configured to change a shift-control start point at which the determination to perform the shifting action is made, such that the shift-control start point is changed according to the shifting response of the transmission portion, and a compulsory shift-control starting portion configured to make the determination when an operating point of a differential portion electric motor has reached the shift-control start point.

Abstract: A multi-mode hybrid transmission for transmitting power from a prime mover and a stored source of energy to a final drive shaft. The transmission may include an input shaft to receive torque from the prime mover, a countershaft operatively coupled to the final drive shaft, a plurality of gear pairs each defining a torque path from the input shaft to the countershaft, a synchromesh clutch assembly to selectively couple the input shaft with a desired gear pair, and first and second electric machines rotatably carried by the input shaft. The first electric machine can provide a motive force to the final drive shaft and the second electric machine can covert rotary speed of the input shaft into electrical energy. Additionally, the first and second electric machines can provide supplemental torque to the output shaft during periods of reduced torque from the prime mover associated with a change in torque path.

Abstract: A method for executing a transmission shift in a hybrid transmission including first and second electric machines includes executing a shift-through-neutral sequence from an initial transmission state to a target transmission state including executing an intermediate shift to neutral. Upon detecting a change in an output torque request while executing the shift-through-neutral sequence, possible recovery shift paths are identified. Available ones of the possible recovery shift paths are identified and a shift cost for each said available recovery shift path is evaluated. The available recovery shift path having a minimum shift cost is selected as a preferred recovery shift path and is executed to achieve a non-neutral transmission state.

Abstract: A method for executing a transmission shift in a hybrid transmission including first and second electric machines includes executing a shift-through-neutral sequence from an initial transmission state to a target transmission state including executing an intermediate shift to neutral. Upon detecting a change in an output torque request while executing the shift-through-neutral sequence, possible recovery shift paths are identified. Available ones of the possible recovery shift paths are identified and a shift cost for each said available recovery shift path is evaluated. The available recovery shift path having a minimum shift cost is selected as a preferred recovery shift path and is executed to achieve a non-neutral transmission state.

Abstract: A method of controlling a powertrain system of a hybrid vehicle includes detecting a request to start an engine, incrementally applying torque to the powertrain system, and biasing the torque against a static member of the powertrain system, such as a parking pawl of a transmission when the transmission is disposed in a parking position, to remove lash from the powertrain system prior to starting the engine.

Abstract: In a hybrid vehicle provided with a transmission unit that allows manual gear shifting and is provided in a power transmission system that transmits power to driving wheels and an indication apparatus that is capable of providing a gear shift guide indication for prompting a manual gear shifting operation of the transmission unit, during engine start processing or during engine shutdown processing while the vehicle is traveling and/or before an engine start condition or an engine shutdown condition is established while the vehicle is traveling, the indication of the indication apparatus is provided in an indication form that is different from a gear shift guide indication for prompting a manual gear shifting operation and corresponds to the engine start processing or the engine shutdown processing.

Abstract: Due to the reduction of a discharge amount of a mechanical oil pump by a lowering of the idling rotation speed, a slip in a hydraulic power transmission apparatus and a blow up of an electric motor for running due to a delay of the rising of the oil pressure upon the sudden start and the like are prevented. While avoiding the slip and the blow up, the idling rotation speed is lowered so as to make the engine noise small. When the return determination from the idling state is performed based on the shift operation from P to D, at step S5, a torque TMG2 of a second motor/generator MG2 is temporarily restricted. As a result, upon the sudden start from the idling state, even when the rising of the oil pressure delays, the second brake B2 engaged upon the starting is prevented from slipping, and the second motor/generator MG2 is prevented from blowing up.

Abstract: The present invention relates to a control system and method for changing speed in starting an engine of a hybrid vehicle that is capable of preventing the occurrence of shift shock. In a hybrid vehicle which includes an engine, a first motor for controlling the engine cranking and engine speed, a second motor that is a traction motor for directly transmitting torque to the axle, a first planet gear set in connection between the engine and the first motor, and a second planet gear set in connection between the engine and the second motor, the control system comprises: a PI control part which instructs a calculated torque to the second motor after calculating the torque, wherein the torque corresponds to the target speed of the second motor; and an engine friction torque feed-forward part for transmitting torque to the PI control part by a feed-forward term control method during starting of the engine, wherein the torque corresponds to the reacting power transmitted to the second motor.

Abstract: In a method for operating a hybrid drive of a vehicle having at least one internal combustion engine and at least one first electric machine as drive machines of a first drive train of the vehicle, and an associated first transmission, the total torque of the drive machines is adapted in a shifting operation of the transmission in order to reduce the load at the transmission and/or in order to modify rotational speeds according to the new transmission ratio, and/or the torque gradient of the drive machines is restricted to a specifiable, maximum torque gradient of the resulting total torque of the drive machines of the first drive train in a transition between acceleration operation and trailing throttle operation.

Abstract: A power split mechanism of a hybrid vehicle includes a sun gear that is coupled to a electric power generator, a ring gear that is coupled to a electric motor and a driving wheel, a pinion gear that meshes with the sun gear and the ring gear, and a carrier that supports the pinion gear and is coupled to a engine. Each of the arms of a inverter includes a first switching element that is provided on an upper arm thereof, and a second switching element that is provided on a lower arm thereof. A control device turns on one of the first switching element and the second switching element and turns off the other if an operation of stopping a vehicle system is performed during running.

Abstract: A control device of a vehicle drive device having an electric motor coupled to a power transmission path between an engine and drive wheels, the control device providing fuel cut electric motor drive control of increasing a rotation speed of the engine with a drive force of the electric motor and interrupting fuel supply to the engine at the time of acceleration operation of a vehicle, and the fuel cut electric motor drive control being terminated if a rotational angular acceleration of the engine becomes equal to or less than a predetermined engine rotational angular acceleration determination value after starting provision of the fuel cut electric motor drive control.

Abstract: A starting control system that starts an engine by an electric motor, including: a starting device including a plurality of the electric motors for starting the engine; and a starting device controller that controls the starting device to prevent an occurrence of a resonance when starting the engine by the electric motor of the starting device. The starting control system can prevent an occurrence of vibration and noise in a power transmission route from an electric motor to an engine.

Abstract: A power generation control device for an electric vehicle includes a power generator driven by an internal combustion engine, a drive battery that stores power generated by the power generator and sensing an SOC that is a state of charge, and a drive motor that propels a vehicle using power generated by the power generator or power stored in the drive battery. The power generation control device controls a power generation torque of the power generator to correspond to an output that is a sum of a drive request output calculated based on a manipulation separately from a drive torque of the drive motor and a battery request output calculated based on the SOC.

Abstract: A fuel saving system for a vehicle powered by an internal combustion engine and having a hydraulically activated automatic transmission. The system includes a hydraulic pump able to supply pressurized transmission fluid to the automatic transmission, an energy storage device, and at least one motor powered by the energy storage device including a motor that is mechanically connected to the hydraulic pump and a motor that is coupled to the engine. The system also includes a controller that is responsive to one or more operating conditions to turn off the engine when the vehicle is stopped and to use the motor that is mechanically connected to the hydraulic pump so as to activate the pump to supply sufficient power to the transmission to maintain engagement of the transmission in a driving gear. The controller is also responsive to one or more operating conditions to activate the motor that is coupled to the engine so as to restart the engine with the transmission engaged in a driving gear.

Abstract: A method and system of providing hydraulic pressure during a transition from gas-powered engine operation to electric motor operation in a hybrid electric vehicle. During the transition, main pressure arising from operation of a gas-powered engine with a main pump is matched with auxiliary pressure arising from operation of a battery-powered electric motor with an auxiliary pump. After matching the main and auxiliary pressures, the auxiliary pressure is boosted to an operational pressure in response to a triggering event.

Abstract: The invention relates to a drive wheel traction chain for a hybrid vehicle comprising a heat engine and a hydraulic traction machine powered by hydraulic accumulators forming two power units that can be used to drive the drive wheels of the vehicle. The invention further comprises a recharge module including electricity storage batteries connected to an electric machine which drives a hydraulic recharge machine that powers the hydraulic accumulators, and a means for controlling the recharge module connected to the means for controlling the power units of the vehicle.

Abstract: A hybrid-type power transmission in which an internal combustion engine and an electric rotating machine are used as a source of power for driving an output shaft through a change-speed mechanism. In the hybrid power transmission, the operation of the electric rotating machine is controlled in such a manner that the rotation speed of a rotor-side rotary member is synchronized with the rotation speed of an input-side or output-side rotary member when the rotation speed of the rotor-side rotary member becomes higher in a predetermined difference than the rotation speed of the input-side or output-side rotary member in shifting operation of a sleeve coupled with the rotor-side rotary member.

Abstract: In an electric-motor-driven oil pump unit with automatic engine-stop system interaction, in which an electric-motor-driven oil pump is driven by an electric motor for hydraulic pressure supply to a transmission of an automotive vehicle employing an automatic engine-stop system, at least in a stopped state of a mechanical oil pump driven by the engine, a motor current/speed detector is provided for detecting a motor current and/or a motor speed of the electric motor. Also provided is a controller configured to output an inhibiting signal to the automatic engine-stop system for inhibiting a mode shift to an automatic engine-stop mode, when a change in the motor current and/or the motor speed during a preliminary operation of the electric-motor-driven oil pump executed from a point of time when an automatic engine-stop condition of the vehicle becomes satisfied, is out of a specified characteristic.