Toyota Jidosha Kabushiki Kaisha

Kabushiki Kaisha Toyota Chuo Kenkyusho

Aisin Seiki Kabushiki Kaisha

Kisaburo Hayakawa

Masataka Osawa

Hiroyuki Yamaguchi

Hiroyuki Nishizawa

Yuji Iwase

Masaki Okamura

Hiroyuki Yoshida

Masami Sugaya

Yoshiaki Ito

Masuji Oshima

Kosuke Aiki

Hideto Inagaki

Kagenori Fukumura

Takashi Ohta

Hiroaki Kato

Hideo Tomomatsu

Hiroji Taniguchi

Naoki Yamada

Yoshio Ito

Toshiaki Ishiguro

Yasunari Nakamura

Ryoichi Hibino

Yoshihiro Mizuno

Naoto Tanaka

Naoki Moriguchi

Kiyokazu Sunami

Syoichi Sayo

Masanobu Kimura

Shuzo Sanda

A hybrid vehicle includes a first gear mechanism which transmits the power of the internal combustion engine to the motor generator side, while accelerating the power between the internal combustion engine and the motor generator; a second gear mechanism which transmits the power of the motor generator side to a vehicle drive shaft, while decelerating the power between the motor generator and the vehicle drive shaft; a third gear mechanism which transmits the power of the drive motor side to the vehicle drive shaft, while decelerating the power between the drive motor and the vehicle drive shaft; a clutch mechanism which switches connection and disconnection between the drive shaft of the motor generator and the first gear mechanism or the second gear mechanism; and a control device which controls the clutch mechanism. The motor generator is not connected to both the vehicle drive shaft and the internal combustion engine at the same time at the time of normal traveling.

Hybrid vehicle

A series hybrid vehicle is equipped with an engine, a first motor generator, and a second motor generator. The vehicle has a reduction gear that is a first power transmission mechanism for engaging the engine with the first motor generator, a reduction gear that is a second power transmission mechanism for engaging the first motor generator with a vehicle drive shaft, and a clutch that is capable of engaging the first motor generator with one of the two reduction gears in a switching manner. The vehicle further has a transmission that switches between transmission gear ratios and engages the second motor generator with the vehicle drive shaft.

Series hybrid vehicle

Assuming that Nand Nare the respective numbers of pinion rollers (); &#x3c1;is the ratio between the inner diameter of a ring roller () and the outer diameter of a sun roller (); and &#x3c1;is the ratio between the inner diameter of a ring roller () and the outer diameter of a sun roller (); and it holds that N=3, and (&#x3c1;+1)&#xd7;(&#x3c1;+1)&#x2267;24+16&#xd7;2, in the case where N=3, then it holds that &#x3c1;&#x2267;0.102&#xd7;(&#x3c1;+1)&#xd7;(&#x3c1;+1)+1.196, and &#x3c1;&#x2266;min[0.204&#xd7;(&#x3c1;+1)&#xd7;(&#x3c1;+1)+3.123, 7+4&#xd7;3], and in the case where N=4, then it holds that &#x3c1;&#x2267;(2&#x2212;2)&#xd7;(&#x3c1;+1)&#xd7;(p+1)/4&#x2212;1, and &#x3c1;&#x2266;min[0.185&#xd7;(&#x3c1;+1)&#xd7;(&#x3c1;+1)+1.320, 7+4&#xd7;3].

Traction drive mechanism

A hydraulic control apparatus includes two oil flow control valves () each provided with a supply control portion () for controlling an oil supply from a pressurized oil source, and a discharge control portion () for controlling connection with a discharge passage. One of those oil flow control valves supplies/discharges oil to/from one of hydraulic chambers () that are oppositely formed in a hydraulic servo mechanism. An operation direction of the hydraulic servo mechanism is performed by operating one of the oil flow control valves. The other operation direction of the hydraulic servo mechanism is performed by operating the other oil flow control valve.

Hydraulic control apparatus and hydraulic control method

A controller determines a target gear ratio from an accelerator opening and a vehicle speed. The controller determines the stroke of a trunnion on the basis of the difference between present inclination and a target inclination, thereby to control stroke by a hydraulic control valve. The stroke is corrected according to input/output disc pushing force.

Speed change control apparatus for toroidal CVT

The vehicle weight determination device includes a microcomputer for achieving the vehicle weight determination by obtaining a driving force after filtering based on the speed ratio of the torque converter and obtaining an integrated driving force with the absolute value of the driving force after filtering by using an area method. Similarly, acceleration after filtering is obtained by filtering process of the acceleration and an integrated to obtain an integrated acceleration. The vehicle weight is determined by the integrated driving force divided by the integrated acceleration.

Vehicle weight determining device

To calculate a vehicle mass based on a driving force caused by an engine, running resistance, and vehicle acceleration, influence of gradient resistance is removed. A gross driving force calculating section calculates a gross driving force F of a vehicle by deducting running resistance from a driving force of a vehicle caused by an engine. An acceleration sensor calculates a longitudinal acceleration &agr; of the vehicle. Relationship among a gross driving force F, a longitudinal acceleration &agr;, a vehicle mass M, and road gradient &THgr; can be expressed as (&agr;&equals;F/M&minus;g sin &THgr;). Because the change of gradient contains only a low frequency component, by processing a gross driving force F and an acceleration &agr;, using a high-pass filter with a predetermined cut-off frequency, the influence of the gradient &THgr; can be removed. Based on the resultant processed gross driving force F and the processed acceleration &agr;, a vehicle mass can be obtained from the above expression without being affected by the influence of the gradient

Vehicle mass calculation device

Apparatus for estimating a drive mode of a motor vehicle desired by an operator of the motor vehicle, including a variable calculating device and a drive mode estimating device, wherein the variable calculating device calculates at least one of drive mode indicating variables such as a drive force of the vehicle desired by the operator upon starting of the vehicle, a maximum rate of increase of the drive force, a maximum deceleration of the vehicle upon operation of a manually operated member for brake application to the vehicle, a coasting run time of the vehicle and a steady run time of the vehicle, and wherein the drive mode estimating device includes a neural network which receives the drive mode indicating variable or variables calculated by the variable calculating device, so that the drive mode estimating device estimates the drive mode of the motor vehicle desired by the operator on the basis of an output of the neural network. The output of the neural network may be used to control a desired controllable system of the vehicle such as an automatic transmission and a vehicle drive force control device.

Vehicle drive mode estimating device, and vehicle control apparatus,

Growing community of inventors

Nagoya, Japan

Kisaburo Hayakawa