Abstract: An object of the present invention is to start an engine while outputting a driving force requested from a driver.

Abstract: Ina drive control apparatus (1) of a hybrid vehicle, a change rate restriction value of a target engine rotational speed which is set on the basis of a vehicle speed is preset, a restriction value of the target engine rotational speed is calculated from the change rate restriction value and a previous target engine rotational speed, a target engine operation point to decide the target engine rotational speed and a target engine torque is set on the basis of the restriction value of the target engine rotational speed and the provisional target engine rotational speed, a target electric power is calculated from a difference between a target engine power which is calculated from the target engine operation point and a target drive power, and torque instruction values of a plurality of motor generators (4, 5) are calculated by using a torque balance equation including a target engine torque which is obtained from the target engine operation point and an electric power balance equation including the target electri

Abstract: It is an object of the invention to suppress a vibration of an engine in a manner such that the engine is not restarted while an engine state changes to an engine stop state and a time in which an engine rotation speed stays at a resonance band is kept short. In a hybrid vehicle which outputs power generated from an engine and a motor generator to a drive shaft through a power transmitting mechanism and promptly passes an engine rotation speed region in which a resonance phenomenon of the engine easily occurs during the startup of the engine, the hybrid vehicle includes a control means which prevents the re-startup of the engine while an engine state changes when an engine re-startup request is generated while the engine state changes from an engine drive state to an engine stop state.

Abstract: Objects are to set up control of a plurality of motor generators in a case where a battery is charged or discharged, to secure both a target driving force and target charging/discharging, and to have the breath of control of using electric power of the battery under a more specific condition.

Abstract: Provided is a hybrid vehicle, wherein a control means (17) includes a maximum regeneration torque calculating means (17D) which calculates a motor generator maximum regeneration torque necessary for supplying power to an electricity storing means (18) and calculates each of an engine operation maximum regeneration torque for operating an engine changing in accordance with a vehicle speed and an engine stop maximum regeneration torque and a change value calculating means (17E) which sets an engine stop prohibition vehicle speed in which an engine (2) is not stopped when a vehicle speed is equal to or faster than a predetermined vehicle speed and calculates a maximum regeneration torque when stopping the engine (2) at the engine stop prohibition vehicle speed as a maximum regeneration torque change threshold value from the engine stop regeneration torque of the maximum regeneration torque calculating means (17D).

Abstract: It is an object of the invention to suppress a vibration generated by an abrupt change in motor torque when starting an engine. In a hybrid vehicle which outputs power generated from an engine and a motor generator to a drive shaft through a power transmitting mechanism, the hybrid vehicle includes: a compensation torque calculating means which calculates an inertia compensation torque for compensating a change in the rotation speed of the engine generated by an inertia at the time of a gear shifting operation; and a target torque calculating means which corrects a target torque of the motor generator based on the inertia compensation torque calculated by the compensation torque calculating means, wherein the compensation torque calculating means corrects the inertia compensation torque when starting the engine.

Abstract: Provided is a hybrid vehicle, wherein a control means (17) includes a target drive power setting means (17A) which sets a target drive power requested for the running of the vehicle, a target drive power calculating means (17B) which calculates target drive power from the target drive power set by the target drive power setting means (17A) and the vehicle speed detected by a vehicle speed detecting means (33), an output limiting means (17C) which limits the amount of power obtained from a electricity storing means (18) based on the state of the electricity storing means (18), and a transition prohibiting means (17D) which prohibits a transition of an engine (2) to a stop state when the power consumed for the transition control of the engine (2) from an operation state to a stop state exceeds a value obtained by subtracting the target drive power calculated by the target drive power setting means (17B) from the output limit value set by the output limiting means (17C).

Abstract: An upper rotational speed limit NengUL and a lower rotational speed limit NengLL of an engine operation prohibition area are set from an upper rotational speed limit Nmg2UL and a lower rotational speed limit Nmg2LL of a motor operation predetermined prohibition area of a second motor generator. When an engine speed target Nengt, calculated from a preset target operating line, lies in the engine operation prohibition area, the engine operating point target is corrected so that the second motor generator rotational speed target Nmg2t lies outside the motor operation prohibition area. When the engine speed target Nengt is greater than or equal to a change-direction engine speed NengCD at which direction of shift to/from an allowable range of engine operation is changed, the engine speed Neng is increased. When the engine speed target Nengt is less than the change-direction engine speed NengCD, the engine speed Neng is decreased.

Abstract: An arrangement which prevents excessive engine speed, satisfies a driver's requested torque and protects a battery from overvoltage. A control apparatus provides a torque control to a hybrid electric vehicle, and calculates an engine speed final target so that an engine speed temporary target does not exceed an upper limit. In addition, the control recalculates an engine operating point target based on the calculated engine speed final target, and calculates an engine power final target based on the recalculated engine operating point target. An electrical power target is calculated and may not exceed an upper limit for battery charging and an upper limit for battery discharging. Engine torque is controlled based on the calculated engine operating point target (especially the engine torque final target). Motor generators are controlled to operate based on the calculated engine operating point target and electrical power target.

Abstract: An engine, a first motor generator and a second motor generator are controlled by calculating an engine power target from a driving power target required for a vehicle, and finding a target engine operating point expressed by a set of an engine speed target and an engine torque target on a target operating line determined in response to the engine power target. When the found target engine operating point is different from the previously found one, a change in engine speed target is limited to a predetermined amount of change and the engine torque target of the set is reset versus an engine speed target involving the limited change based on the determined target operating line. Consequently, the engine power target and thus the driving power target are ensured so as to restrain or prevent sudden or frequent changes in engine speed with the efficiency kept high.

Abstract: To provide a driving source control for a hybrid motor vehicle capable of comfortably driving a motor generator by activating an internal combustion engine only at minimum necessary timings at a time of moving backward. It is a driving source control device 1 for a hybrid motor vehicle that moves by mounting an engine 2 and motor generators 4 and 5, in which a driving control unit 32 reduces a target rotational speed of the first motor generator 4, when a shift position detection unit 47 has acquired a backward moving command and a battery state of charge detection unit 36 has detected that a remaining charge amount SOC of a battery 21 is less than or equal to a setting value, at a time of an activation stopping state of the engine 2.

Abstract: A drive control apparatus for hybrid vehicles adapted to facilitate controlling a rotation speed of an internal combustion engine, preventing excess speeds of a motor generator. The drive control apparatus for hybrid vehicles is adapted for a drive control of a vehicle using outputs from an engine and motor generators, and includes a target engine operating point setter for setting up a target engine operating point to determine target engine torque and a target engine rotation speed of the engine from target engine power and an efficiency of system. A motor torque command value calculator sets up respective torque command values of the motor generators, and an engine torque corrector corrects the target engine torque by a target engine torque correction value set up based on the torque command values of the motor generators and permissible output torque of the motor generators.

Abstract: An apparatus that both prevents excessive engine speed and satisfies a driver's requested drive torque. A control apparatus provides torque control to a hybrid electric vehicle and uses a calculated engine speed final target, and engine speed temporary target, which may not exceed an upper limit. In addition the control recalculates an engine operating point target based on the calculated engine speed final target and calculates an engine power final target based on the recalculated engine operating point target. An electrical power target is calculated based on the calculated engine power final target. Engine torque is controlled based on the calculated engine operating point target (especially the engine torque final target). In addition, motor generators are controlled to operate in power running mode or regenerating mode, based on the calculated engine operating point target and electrical power target.