Toyota Jidosha Kabushiki Kaisha

Yasuhiro Kuze

Naoto Kato

Takayoshi Kawai

Teppei Yoshioka

Akihiro Katayama

Hiroshi Sawada

Toshinari Nagai

Naoya Takagi

Takahiro Uchida

Teruhiko Miyake

Hiroshi Watanabe

Yukio Kinugasa

Hiroki Ichinose

Noriyasu Adachi

Toshihiro Takagi

Satoru Tanaka

Yusuke Saito

Ryosuke Ikemura

Takayuki Otsuka

Shinji Kojima

Hiromasa Hashimoto

Yosuke Matsumoto

Yukio Kuroda

Naoki Baba

A drive force control system configured to reduce a total energy consumption of a hybrid vehicle. The drive force control system calculates: an output power of the engine which can optimize a thermal efficiency given that the engine is operated at a best fuel point; and a required electric power to be supplied from a battery or to be generated by a control motor, which can adjust the drive power established by the output power of the engine to the required power. A power exchange between the control motor and the battery is interrupted if the required electric power to be supplied from the electric storage device or to be generated by the control motor is less than a first predetermined electric power.

Drive force control system for hybrid vehicle

A switch includes an operating member and three contacts (first, second and third contacts). The operating member displaces between a first and a second positions. A state of the three contacts is switched between a first and a second states by displacement of the operating member. Each contact connects or disconnects a signal line in the first state, and puts, in the second state, the signal line into a state reverse to the first stat. In course of the displacement of the operating member from the first position to the second position, the first contact switches from the first state to the second state, the second contact switches from the first state to the second state after switching of the first contact, and the third contact switches from the second state to the first state at a timing between switching of the first contact and switching of the second contact.

Switch and abnormality determining method thereof

An engine starting system for starting an engine promptly during propulsion without reducing a drive force. When a condition to crank the engine is satisfied during propulsion in a neutral stage, torque is applied to an input rotary element to crank the engine by reducing a rotational speed of a control rotary element by increasing a torque capacity of a first engagement device to utilize an inertial force of the free rotary element as a reaction force.

Engine starting system for vehicle

A vehicle control system, in which that maintains a reaction force against the backward movement of a vehicle while preventing an overheating of a motor due to phase lock of the motor. When a thermal load on a specific phase of the motor exceeds a threshold value, a controller execute a phase shift control to reduce a thermal load on a specific phase of the motor by changing a rotational angle of the motor, while interrupting torque transmission between the motor and wheels and generating the torque to stop the vehicle by the actuator.

Control system for vehicle

A time point trepresents a time point when a turbocharged engine is brought into a decelerating state, and an opening degree of a throttle valve is decreased. A time point trepresents a time point when an opening command to an ABV is issued. When the ABV has an abnormality, and when a WGV is stuck open, a turbocharging pressure before the time point tshows a tendency to fall below a target turbocharging pressure, and a turbocharging pressure after the time point treduces slowly to approach a predetermined pressure. When the WGV is stuck closed, a turbocharging pressure before the time point tshows a tendency to exceed the target turbocharging pressure, and the turbocharging pressure after the time point treduces with vigor to approach the predetermined pressure.

Control device for internal combustion engine

An engine includes a turbocharger, an air bypass valve, a wastegate valve, and an EGR apparatus. The engine also includes an ISC passage that connects an upstream side and a downstream side of a throttle valve in an intake passage, and an ISC valve that adjusts an amount of air flowing through the ISC passage. A control apparatus for the engine performs valve opening control to set an opening of an ISC valve at a larger opening than a reference opening when a required torque required by the engine is smaller than an estimated torque that can be generated by the engine, and closes the air bypass valve and the wastegate valve for a fixed period following completion of the valve opening control when an EGR valve of a low pressure EGR apparatus is opened during execution of the valve opening control.

Control apparatus for internal combustion engine

An internal combustion engine of the present invention is an internal combustion engine equipped with port injectors. Further, the internal combustion engine has an ISC passage that connects an upstream side and a downstream side of a throttle valve in an intake passage, and an ISC valve that regulates an amount of air flowing in the ISC passage. A control device of the present invention performs valve opening control that makes an opening degree of the ISC valve an opening degree larger than a reference opening degree when request torque required by the internal combustion engine is smaller than estimated torque that can be generated in the internal combustion engine, and sets a timing for fuel injection from the port injector at an opening timing of an intake valve of a cylinder in which the port injector is installed during the valve opening control.

The invention has an object to control an EGR amount accurately in transient time. An ECU switches EGR control to the one-valve EGR control and the both-valve EGR control based on a request EGR amount. When the EGR control is switched to the one-valve EGR control from the both-valve EGR control, an EGR valve of one bank is closed first. Next, during a time period until an opening degree restriction time period elapses after the EGR valve is closed, an opening degree of an EGR valve of the other bank is restricted to be smaller than a one-valve target opening degree. Subsequently, when the opening degree restriction time period elapses, restriction of the opening degree of the EGR valve is cancelled, and the opening degree of the EGR valve is changes to the one-valve target opening degree.

EGR control method of internal combustion engine

An internal combustion engine of the present invention is an internal combustion engine including a supercharger and an EGR device. Further, the internal combustion engine has an ISC passage that connects an upstream side and a downstream side of a throttle valve in an intake passage, and an ISC valve that regulates an amount of air that flows in the ISC passage. A control device of the present invention performs valve opening control that makes an opening degree of the ISC valve an opening degree larger than a reference opening degree when request torque required by the internal combustion engine is smaller than estimated torque that can be generated in the internal combustion engine, and prohibits opening of an EGR valve of the EGR device during execution of the valve opening control.

A first fluid system includes a thermostat portion T, a valve portion V, and an ECUA. The thermostat portion T includes a first thermostatin a first divergent pathway PBand a second thermostatin a second divergent pathway PB. The valve portion V includes a valve mechanism in at least a second portion SGof portions SG, SG, SG. In the ECUA, achieved is a control unit that controls the valve portion V to switch a flow control state of at least one of the valve mechanism of the valve portion V when one of an open failure and a close failure occurs in one of the thermostats

Fluid control system

Disclosed is a vehicle running control device that controls the speed of a vehicle on the basis of the information of a set inter-vehicle distance or a set vehicle speed according to the detection state of a vehicle in front. When an accelerator pedal or a brake pedal of the vehicle is operated and the vehicle in front of the vehicle is present, the set inter-vehicle distance is updated. When the pedal of the vehicle is operated and the vehicle in front of the vehicle is absent, the set vehicle speed is updated.

Vehicle running control device

The vehicle travel control device according to the invention is a vehicle travel control device that controls the travel of a host vehicle based on any of inter-vehicle distance setting and vehicle speed setting that are setting information set in advance, in which the inter-vehicle distance setting and the vehicle speed setting can be updated individually in accordance with the operation of an accelerator pedal or a brake pedal in the host vehicle, and setting information to be updated are selected based on the changes in the travelling conditions of the host vehicle or a leading vehicle.

Vehicle travel control device

A following distance control device () that controls a vehicle to regulate a distance to a preceding vehicle to a target following distance, the following distance control device () including: detecting unit () that detect at least one of acceleration operation () or deceleration operation () by a driver; a target following distance changing unit that changes the target following distance on the basis of the acceleration operation () or the deceleration operation () by the driver that is detected by the detecting unit (); and an inhibition unit that inhibits a changing amount of the target following distance by the target following distance changing unit when the given acceleration operation () or the given deceleration operation () is executed.

Following distance control device and following distance control method

An upstream side catalyst and a downstream side catalyst are disposed in an exhaust passage. A first oxygen sensor is disposed between these two catalysts and a second oxygen sensor is disposed downstream of the downstream side catalyst. The air-fuel ratio is forcibly oscillated and the oxygen storage capacity of the upstream side catalyst is detected. Deterioration of the upstream side catalyst is then detected based on whether this oxygen storage capacity is larger than a predetermined value. The forced oscillation of the air-fuel ratio is performed only when the oxygen storage state of the downstream side catalyst is appropriate.

Catalyst deterioration detecting apparatus and method

An air-fuel ratio control apparatus estimates, on the basis of an exhaust air-fuel ratio of exhaust gas flowing into an exhaust purifying catalyst unit disposed in an exhaust passage of an engine, an emission of at least one specific component contained in exhaust gas flowing out of the exhaust purifying catalyst unit. The air-fuel ratio control apparatus performs the estimation by use of a model, and controls the air-fuel ratio in such a manner that the estimation value reaches a target state. The model is previously determined in consideration of the mass balance of the specific component.

Growing community of inventors

Numazu, Japan

Yasuhiro Kuze