A power transmission system of a hybrid electric vehicle may include an input shaft, an output shaft, a first planetary gear set including a first rotation element directly connected to a first motor/generator, a second rotation element connected to the output shaft through an externally-meshed gear and a third rotation element directly connected to the input shaft, a second planetary gear set including a fourth rotation element directly connected to a second motor/generator, a fifth rotation element connected to the output shaft through an externally-meshed gear and a sixth rotation element selectively connected to a transmission housing and selectively connected to the first rotation element, transfer gears forming the externally-meshed gears, and frictional elements selectively connecting two rotation elements of the second planetary gear set, selectively connecting the first rotation element to the sixth rotation element, or selectively connecting the sixth rotation element to the transmission housing

Power transmission system of hybrid electric vehicle

A control device for a hybrid vehicle includes an actual intake gas negative pressure detection unit which detects an intake air negative pressure for the engine, an estimated intake gas negative pressure calculation unit which estimates an intake air negative pressure based on a revolution number of the engine and an opening degree of a throttle, and an engine control unit which compares an actual intake gas negative pressure obtained by the actual intake gas negative pressure detection unit with an estimated intake gas negative pressure obtained by the estimated intake gas negative pressure calculation unit. The engine control unit prohibits a fuel supply to the engine until the actual intake gas negative pressure matches the estimated intake gas negative pressure, and carries out the fuel supply to the engine when the actual intake gas negative pressure matches the estimated intake gas negative pressure.

Control device for hybrid vehicle

A planetary gear train may include an input shaft, an output gear adapted to output a shifted torque, a first compound planetary gear set having four rotation elements by combining first and second planetary gear sets, a second compound planetary gear set having four rotation elements by combining third and fourth planetary gear sets, eight rotation shafts including two rotation elements connected to each other or one rotation element among the rotation elements of the first and second compound planetary gear sets, and six friction members including three clutches interposed between a selected rotational shaft among the rotational shafts and the input shaft and adapted to selectively transmit the torque and three brakes interposed between a selected rotational shaft among the rotational shafts and a transmission housing.

Planetary gear train of automatic transmission for vehicles

According to conventional art, if there is an obstacle on the left of a vehicle, a control threshold value is set so as to avoid the obstacle If the control threshold value is exceeded, the vehicle is controlled in accordance with a deviation quantity so as to return to a position where the control threshold avoids being exceeded However, even if a risky oncoming vehicle is approaching the vehicle on the right, the vehicle is controllably moved toward the oncoming vehicle Thus, disadvantageously, a driver has a sense of fear or discomfort A vehicle control apparatus according to the present invention includes a calculation section configured to calculate a first risk level present on the left of the vehicle and a second risk level present on the right of the vehicle, a setting section configured to set a first control threshold for the left of the vehicle based on the first risk level and to set a second control threshold for the right of the vehicle based on the second risk level, a change section configured to change at least one of the first and second control thresholds based on the first and second risk levels, and a control section configured to control the vehicle based on the changed control threshold

Vehicle control apparatus

A driving/braking force manipulation control input of a k-th wheel, which denotes one or more specific wheels among a plurality of wheels of a vehicle, is determined such that a required condition concerning a relationship among a road surface reaction force that may act from a road surface on the k-th wheel on the basis of the detected values or estimated values of a side slip angle and a friction characteristic of the k-th wheel, a feedback control input related to the driving/braking force of the k-th wheel for bringing a difference between a state amount of the vehicle and a reference state amount close to zero, a driving/braking force feedforward control input based on a drive manipulated variable supplied by a driver of the vehicle, and a k-th wheel driving/braking force manipulation control input is satisfied. This arrangement makes it possible to properly control a motion of an actual vehicle to a desired motion while properly considering the characteristics of a road surface reaction force acting from a road surface on a wheel.

Vehicle Control Device

A vehicle driving apparatus is provided which can execute cranking of an internal combustion engine by transmitting a mechanical power from a rotor of a motor to an engine output shaft without executing an engaging/disengaging operation of a clutch. A driving apparatus 10 of a hybrid vehicle 1 includes a first speed change mechanism 30 capable of receiving the mechanical power from an engine output shaft 8 by a first input shaft 27 and transmitting the mechanical power to drive wheels 88, a second speed change mechanism 40 capable of receiving the mechanical power from the engine output shaft 8 and a rotor 52 by a second input shaft 28 engaged with the rotor 52 and transmitting the mechanical power to the drive wheels 88, a first clutch 21 capable of engaging the engine output shaft 8 with the first input shaft 27, and a second clutch 22 capable of engaging the engine output shaft 8 with the second input shaft 28, wherein the second clutch 22 is placed in an engaged state when operation force for executing an engaging/disengaging operation is not applied to the second clutch 22.

Drive device for vehicle

A driving apparatus (10) includes a first transmission mechanism (30) for receiving mechanical power from an engine output shaft (8) by a first input shaft (27), a second transmission mechanism (40) for receiving the mechanical power from the engine output shaft (8) and a motor (50) by a second input shaft (28), and a first clutch (21) capable of engaging the engine output shaft (8) with the first input shaft (27). When performing cranking of an internal-combustion engine (5), an ECU (100) selects a gear position of the first transmission mechanism (30) and the second transmission mechanism (40) so as to reduce speed of the mechanical power received by the second input shaft (28) and transmit the power to the first input shaft (27), and puts the first clutch (21) into an engaging state. The speed of the mechanical power from the motor (50) is reduced by the second transmission mechanism (40) and the first transmission mechanism (30) to increase torque, and the power is transmitted to the engine output shaft (8) through the first clutch (21).

Driving device for vehicle

A driving apparatus includes a first transmission mechanism receiving mechanical power from an engine output shaft by a first input shaft, a second transmission mechanism receiving the mechanical power from the engine output shaft and a motor by a second input shaft, and a first clutch capable of engaging the engine output shaft with the first input shaft. When performing cranking of an internal-combustion engine, an ECU selects a gear position of the first transmission mechanism and the second transmission mechanism to reduce speed of the mechanical power received by the second input shaft and transmit the power to the first input shaft, and puts the first clutch into an engaging state. The speed of the mechanical power from the motor is reduced by the first and second transmission mechanisms to increase torque, and power is transmitted to the engine output shaft through the first clutch.

Driving apparatus for vehicle

PROBLEM TO BE SOLVED: To provide a vehicle braking device capable of achieving more comfortable feeling, restraining reduction in energy efficiency, and preventing poor fuel efficiency. SOLUTION: In the vehicle braking device 1, operation of a vehicle control means 2c is selected by a selection switch. The vehicle braking device includes a braking processing means 5a which performs an increased-pressure braking processing in which a pump 15 increases a basic oil pressure or operation oil pressure so as to generate a control oil pressure when there is a deceleration instruction. COPYRIGHT: (C)2010,JPO&INPIT

Vehicle braking device

A vehicle driving apparatus that can execute cranking of an internal combustion engine by transmitting a mechanical power from a rotor of a motor to an engine output shaft without executing an engaging/disengaging operation of a clutch A driving apparatus of a hybrid vehicle includes a first speed change mechanism capable of receiving mechanical power from an engine output shaft by a first input shaft and transmitting the mechanical power to drive wheels, a second speed change mechanism capable of receiving the mechanical power from the engine output shaft and a rotor by a second input shaft engaged with the rotor and transmitting the mechanical power to the drive wheels, a first clutch capable of engaging the engine output shaft with the first input shaft, and a second clutch capable of engaging the engine output shaft with the second input shaft, wherein the second clutch is placed in an engaged state when operation force for executing an engaging/disengaging operation is not applied to the second clutch

Junichi Morimura

Papers

Drive device for vehicle

Driving device for vehicle

Driving apparatus for vehicle

Vehicle braking device

Vehicle driving apparatus