Toyota Jidosha Kabushiki Kaisha

Denso Corporation

Akira Eiraku

Hiroshi Watanabe

Shinichi Soejima

Keisuke Sasaki

Masashi Hakariya

Naoki Kokubo

Yutaka Hirano

Naohide Fuwa

Harufumi Muto

Satoshi Yoshizaki

Yoshihiro Sakayanagi

Noriyasu Adachi

Koji Morita

Shintaro Hotta

Satoru Tanaka

Yusuke Saito

Masanobu Kanamaru

Gohki Kinoshita

Kiyonori Takahashi

Yoshiyuki Kageura

Yoshinori Kadowaki

Yuji Miyanoo

Hiroshi Yamashita

Jouji Yamaguchi

Teppei Yoshioka

Takahiro Yamanashi

Masanori Hattori

Shinichi Hiraoka

Shin'ichi Soejima

A control system for a vehicle that executes a feedback control properly to adjust a speed of a predetermined rotary member to a target speed. A controller is configured to: calculate an amount of change in a torque applied to the rotary member by one of the torque devices, in accordance with operating conditions of the torque devices; and calculate an amount of change in the torque applied to the rotary member by another one of the torque devices, based on a target amount of change in a synthesized torque of the torques of the torque devices and the amount of change in the torque applied to the rotary member by one of the torque devices.

Control system for vehicle

A control device of an automatic transmission controls an automatic transmissioncomprising a transmission mechanismincluding a plurality of engagement elements, and a hydraulic oil supply devicesupplying hydraulic oil to the transmission mechanism The control device of the automatic transmission comprises an engagement element control partconfigured to use the hydraulic oil supply device to make the plurality of engagement elements change between an engaged state and a disengaged state; and a deceleration degree calculating partconfigured to calculate a target deceleration degree of a vehicle in which the automatic transmission is provided. The engagement element control part is configured to make the engagement element in the disengaged state engage so that the vehicle decelerates if the target deceleration degree is equal to or more than a predetermined value when an increase in temperature of hydraulic oil in the automatic transmission is demanded.

Control device of automatic transmission

To improve accuracy in misfire determination, a control apparatus for an internal combustion engine that controls an internal combustion engine having a variable compression ratio mechanism capable of changing the compression ratio of the internal combustion engine includes a controller configured to: determine that a misfire occurs if the magnitude of rotational fluctuation of the internal combustion engine is equal to or larger than a misfire criterion value and to make the misfire criterion value larger during the time in which changing of the compression ratio of the internal combustion engine is in progress than during the time in which the compression ratio is not being changed.

Control apparatus for internal combustion engine

A shift control system which can reduce a shift shock is provided. A target torque determiner set a target torque of an engine based on an accelerator position. An actual torque determiner calculates an actual torque of the engine in the inertia phase. A controller calculates an integrated value of a difference between the target torque and the actual torque from a commencement of the inertia phase to a predetermined time point before a termination of the inertia phase, and corrects the target torque in a remaining period between the predetermined time point and the termination of the inertia phase.

Shift control system for vehicle

It is an object of the invention to enhance the possibility of realizing a required torque in a supercharging region where scavenging occurs in a control apparatus for a supercharged engine. In order to achieve this object, the control apparatus for the supercharged engine according to the invention determines an operation amount of an intake valve driving device from a target in-cylinder air amount that is calculated from a required torque, and determines an operation amount of a throttle from a target intake valve passing air amount that is obtained by adding an amount of air blowing through an interior of a cylinder to the target in-cylinder air amount.

Control apparatus for supercharged engine

In a multiple cylinder supercharged engine, when reduced cylinder operation is executed, a throttle, which is located downstream of a compressor driven by a turbine provided in an exhaust passage, through which exhaust gas of a cylinder group flows, is operated to a fully closed state, wherein the reduced cylinder operation is applied to the cylinder group. A fuel injection amount of at least one cylinder included in the cylinder group is made smaller than a fuel injection amount of a cylinder included in another cylinder group, and this at least one cylinder is operated, in order to increase rotational speed of the compressor, so that a value of pressure of an upstream side of the throttle is controlled to a value, which is equal to or larger than a value of pressure of a downstream side of the throttle.

Control device for supercharged engine

A control apparatus for an internal combustion engine according to the present invention includes: a turbocharger having a turbine disposed in an exhaust path and a compressor disposed in an intake path; a waste gate valve that opens and closes a bypass channel that connects a part of the exhaust path upstream of the turbine and a part of the exhaust path downstream of the turbine to each other; a drive mechanism that drives the waste gate valve; and waste gate valve opening controlling means that controls the drive mechanism so that the opening of the waste gate valve agrees with a saturation minimum opening when the drive mechanism opens the waste gate valve, the saturation minimum opening being the minimum opening at which the flow rate of an exhaust gas passing through the bypass channel is saturated.

An internal combustion engine control apparatus includes means that detects an inlet temperature that is a temperature in a vicinity of an inlet of a purification catalyst disposed in an exhaust path and means that detects a turbine temperature that is a temperature in a vicinity of an exhaust turbine of a turbo-supercharger disposed in the exhaust path, and also includes means that controls a valve overlap that is a state in which an intake valve and an exhaust valve of the internal combustion engine are open simultaneously. When the inlet temperature is lower than an inlet high temperature reference value, and the turbine temperature is higher than a turbine high temperature reference value that is higher than the inlet high temperature reference value, the valve overlap amount is increased so as to be greater than a turbine high temperature time reference amount.

Internal combustion engine control apparatus

Disclosed is an internal combustion engine control device that is capable of accurately estimating a turbine flow rate during a transient operation of an internal combustion engine with a turbocharger having a WGV. Steps are performed to acquire an exhaust gas flow rate mcyl (=mB), a WGV opening WG (=X), and a turbine rotation speed Ntb (=Na) during the transient operation of the internal combustion engine. Steps are then performed to calculate the turbine flow rate (=mtA) and exhaust gas flow rate mcyl (=mA), which prevail when the turbine rotation speed Ntb and WGV opening WG acquired during the transient operation are achieved during a steady operation. Next, a step is performed to calculate the turbine flow rate (=mtB) during the transient operation by applying the flow rate ratio of mtA to mA to the exhaust gas flow rate mcyl during the transient operation. Preferably, the turbine rotation speed Ntb during an Ntb transient operation is estimated by using a turbine flow rate change amount &#x394;mt (=mtB&#x2212;mtA) during the transient operation.

Control device for internal combustion engine

A control system of an internal combustion engine changing an operating timing of a valve in an internal combustion engine where a valve drive cam () and a pump drive cam () are both provided on a valve camshaft () is provided. That control system has a device inhibiting the operating timing from being returned in a direction reverse to the direction of the target operating timing during change of the operating timing. Further, in the control system, the relative rotational phases of the valve drive cam and the pump drive cam are set considering utilization of the composite reaction torque of the valve operation drive reaction torque and the fuel pump drive reaction torque acting on the valve camshaft for changing the operating timing in the direction of the target operating timing.

Control system of internal combustion engine

A control system for an internal combustion engine equipped with a supercharger calculates a target intake mass airflow (m') in accordance with an accelerator pedal travel (&#x3b8;), using a virtual internal combustion engine model having a virtual upstream intake air pressure (P). The control system then calculates a target throttle opening (&#x3b8;) in accordance with a measured upstream intake pressure (P) so as to provide the target intake mass airflow (m&#x2032;), and controls a throttle valve based on the target throttle opening (&#x3b8;).

Control system and control method for internal combustion engine equipped with supercharger

A compressor flow rate is calculated using a compressor model, which is the physical model of a compressor. A plurality of the compressor models are provided, and the compressor model used for calculating the compressor flow rate is changed in accordance with an operational condition of an internal combustion engine.

Apparatus for and method of controlling internal combustion engine equipped with turbocharger

An internal combustion engine control apparatus includes: a fuel injector; a cooling fan of a radiator that radiates the heat of coolant in a coolant passage in the internal combustion engine; a flow rate control mechanism that variably controls the flow rate of the coolant; an abnormality detector that detects an abnormality of the cooling fan; and a controller that controls the amount of fuel injected from the fuel injector to the internal combustion engine and the operation of the flow rate control mechanism in accordance with the result of the abnormality detector.

Internal combustion engine control apparatus and method

A control system for an internal combustion engine calculates a provisional target value of the throttle opening in accordance with an accelerator pedal travel, upon detection of a sudden operation of the accelerator pedal. The system also calculates a target pressure change in the surge tank according to the provisional target value, on the basis of the actual surge tank pressure and the cylinder intake mass airflow, using a virtual intake system model. The control system sets a target throttle opening in accordance with the surge tank pressure and the cylinder intake mass airflow, so as to provide the target pressure change under a condition of the actual surge tank volume.

Control system and control method for internal combustion engine

A turbine of a turbocharger is disposed on an exhaust passage. An air-fuel ratio sensor is disposed downstream of and in proximity to the turbine. An element of the air-fuel ratio sensor is positioned on or near the axis of an exhaust port of the turbine. A whirling flow of an exhaust gas in the same direction as a turbine wheel rotates is produced immediately after the exhaust port of the turbine, so that the whirling flow of the exhaust gas can centrifuge condensed water in the exhaust gas. The exhaust gas contacts the element near the axis of the exhaust port where there is substantially no condensed water, thus preventing the element from being wetted with water or cracked.

Growing community of inventors

Sunto-gun, Japan

Akira Eiraku