Subaru Corporation

Dowa Electronics Materials Co., Ltd.

Mitsubishi Jidosha Kogyo Kabushiki Kaisha

Dowa Holdings Co., Ltd.

Oita University

Takuya Yano

Naoto Chiba

Shinichirou Nakahira

Akira Nagatomi

Masashi Takahashi

Toshihiko Ueyama

Hiroshi Tanada

Katsutoshi Nagaoka

Atsushi Doki

Yuki Kaneshiro

Keigo Yamada

Kazumasa Ikari

Tatsuro Miyazaki

Yuichiro Higashiji

Hisashi Suda

A drive control apparatus for an electric vehicle includes a controller that controls an engine, a traveling motor, a transmission, and an output clutch. The controller estimates the rotation angle of the motor by a first estimation method and controls the motor on the basis of the estimated angle. The estimation method is executable when the rotation speed of the motor is a threshold or higher. When a rotation angle sensor for the motor is in an abnormal state and a specific driving state is present, the controller controls one or more of the engine, the transmission, and the output clutch differently from when the sensor is in a normal state, and thereby maintains the rotation speed at the threshold or higher. The specific driving state is a state in which the rotation speed is lower than the threshold under the control when the sensor is in the normal state.

Drive control apparatus for electric vehicle

A vehicle control apparatus includes a storage and a processor. The storage holds a first resonance map. The processor calculates a first torque command value that indicates a value of torque to be outputted by a first driving source. The first resonance map includes, as one or more first resonance points, one or more operating points at which resonance occurs in an operating region of the first driving source under a square wave control. The processor decreases or increases the first torque command value to avoid the one or more first resonance points on the condition that a predicted route of transition of an operating point of the first driving source meets the one or more first resonance points.

Vehicle control apparatus for reducing noise during square wave motor control

A vehicle control apparatus includes a storage and a processor. The storage holds a first resonance map. The processor calculates a first torque command value and switches a control method of a first driving source. The first driving source includes an electric motor. The first torque command value indicates a value of torque to be outputted by the first driving source. The first resonance map includes, as one or more first resonance points, one or more operating points at which resonance occurs in an operating region of the first driving source under a square wave control. The processor switches the control method of the first driving source from the square wave control to a sine wave control on the condition that a predicted route of transition of an operating point of the first driving source meets the one or more first resonance points.

Vehicle control apparatus

An electric vehicle includes first and second traveling motors, first and second rotational position sensors, and a measurement controller. The first rotational position sensor detects a rotation angle of the first traveling motor and has a first wheel-speed range in which a deviation of an original position of the first rotational position sensor is measurable. The second rotational position sensor detects a rotation angle of the second traveling motor and has a second wheel-speed range in which a deviation of an original position of the second rotational position sensor is measurable. The second wheel-speed range differs from the first wheel-speed range. The measurement controller executes, in an execution order, measurements of the deviations of the original positions of the first and second rotational position sensors while the electric vehicle is traveling, and switch the execution order on the basis of acceleration or deceleration data of the electric vehicle.

Electric vehicle

A vehicle control apparatus includes an inverter, a torque setting unit that sets a first torque command value of a traveling motor based on an accelerator operation amount, a torque correction unit that corrects the first torque command value to a second torque command value by performing feedback of the result of control of the traveling motor to the first torque command value, an inverter control unit that generates a drive signal of switching elements based on the second torque command value and a carrier signal, and a motor lock determination unit. When the traveling motor is determined to be in the motor lock state by the motor lock determination unit, the torque correction unit sets a feedback gain to be smaller than a threshold gain, and the inverter control unit sets the frequency of the carrier signal to be lower than a threshold frequency.

The present invention provides a catalyst in which a reaction initiation temperature at which self-heating function is exhibited is low and which is capable of suppressing carbon accumulation even when a reaction is repeated. The catalyst of the present invention includes a CeZr-based oxide, silicon, and a catalytically active metal, wherein the CeZr-based oxide satisfies CeZrO(x+y=1) and the silicon satisfies molar ratios of 0.02&#x2266;Si/Zr and 0.01&#x3c;Si/(Ce+Zr+Si)&#x3c;0.2. When the catalyst is used, a reduction temperature for generating initial oxygen deficiency can be decreased. Depending on the catalytically active metal, a reduction activation treatment can be performed even at about 20&#xb0; C. without any need for heating. In a repeated hydrogen generating reaction, the deposition of carbon generated on the surface of the catalyst can be suppressed, and a decrease in catalytic activity can be prevented.

Catalyst, method for producing catalyst, and method for producing hydrogen-containing gas using catalyst, and hydrogen generating device, fuel cell system, and silicon-supported CeZr-based oxide

To provide an oxidation catalyst capable of burning PM of diesel engine exhausts gas at a low temperature, and hardly subjected to poisoning due to sulfur oxide. A composite oxide contains Ce, Bi, and M (wherein M is one or more elements selected from Mg, Ca, Sr, and Ba) and oxygen, and is manufactured, with a molar ratio of Ce, Bi, M expressed by Ce:Bi:M=(1&#x2212;x&#x2212;y):x:y, satisfying 0&#x3c;x&#x2266;0.4, and 0&#x3c;y&#x2266;0.4. This composite oxide is suitable as a PM combustion catalyst, and is hardly subjected to poisoning due to sulfur oxide.

Composite oxide for exhaust gas purifying catalyst and exhaust gas purifying catalyst, and diesel exhaust gas purifying filter

Diesel particulate filter that can lower the particulate matter (PM) combustion start temperature and use material containing silicon (Si) for a carrier. The carrier, which has a filter function, is allowed to support a perovskite-type complex oxide expressed by formula (1) as follows, wherein 0&#x3c;x&#x3c;0.7 and 0&#x2266;y&#x2266;1: formula (1)=LaBaMnFeO.

Growing community of inventors

Tokyo, Japan

Takuya Yano