Mitsubishi Jidosha Kogyo Kabushiki Kaisha

Yokogawa Electric Corporation

Mitsubishi Jidosha Kogyo K.k.

Toshiyuki Miyata

Katsunori Ueda

Hitoshi Toda

Koji Kawakita

Koji Shibata

Hiroki Yamamoto

Hideto Ide

Ryosuke Itano

Hideo Matsunaga

Sumio Tanaka

Hitoshi Kamura

Satoshi Maeda

Satoru Nakamura

Hiroaki Ueno

Shigetoshi Hirano

Katsuhiro Furuta

Hisakazu Ikedaya

Takahiro Tsutsui

Hiroshi Funakoshi

Yoshio Uomori

Kenichi Nakamori

Wataru Matsumura

Hayato Izumi

Tsuyoshi Tadanaga

Ichizo Itoh

Madoka Ueno

Koji Maema

Hideaki Yamashita

Shinji Kanno

Takahiro Izuchi

Tadashi Ujihara

Fuminobu Hongoh

Shohei Miyajima

Provided is a diagnostic apparatus, including a diagnostic unit configured to diagnose a condition of a vortex flowmeter using a determination result of a magnitude of a signal component of each of at least one target detection signal among the at least one detection signal detected by the vortex flowmeter having a vortex generator and a detection unit configured to detect at least one detection signal according to a vortex generated by the vortex generator, or a magnitude of a signal component of at least one of combined signals configured to linearly combine two or more of the at least one detection signal.

Diagnostic apparatus, measurement apparatus, diagnostic method, and computer-readable medium

A control device has a VVT (variable valve timing) mechanism which changes opening or closing timing of at least one of an intake valve and an exhaust valve, and includes: a processor; a sensor for detecting atmospheric pressure; and a sensor for detecting the amount of air flowing through an intake air flow path. The processor calculates a charging efficiency based on the detected amount of air, calculates a volumetric efficiency from the detected amount of air and the detected atmospheric pressure, calculates the charging efficiency valve opening timing of the intake valve based on the charging efficiency, calculates the volumetric efficiency valve opening timing of the intake valve based on the volumetric efficiency, and sets the valve opening timing(s) of at least one of the intake valve and the exhaust valve based on one of the charging efficiency valve opening timing and the volumetric efficiency valve opening timing.

Control device for internal combustion engine

A fuel injection control apparatus switches between MPI and DI+MPI modes. The apparatus includes a unit calculating a DI direct combustion rate that is the rate of that portion of the amount of DI injection corresponding to a fuel combusted instead of adhering to inside of the cylinder, and a unit calculating a cylinder vaporization rate that is the rate of the amount of that portion of the fuel adhering to the inside of the cylinder which vaporizes. The former unit controls fuel injection based at least on the DI direct combustion rate and the cylinder vaporization rate. When the mode is switched between the MPI mode and the DI+MPI mode, the former unit corrects the DI direct combustion rate or the cylinder vaporization rate to set the amount of fuel injection to a value different from that set when the fuel injection modes are maintained.

Fuel injection control apparatus for internal combustion engine

The control apparatus for an engine includes: a first controller that sets a valve-opening timing of an intake valve of the engine in response to an amount of intake air; and a second controller that sets an injection start time of a fuel injector of the engine in response to the amount of intake air. In a case where the amount of intake air is within a first range being equal to or more than a predetermined value, the first controller advances the valve-opening timing as compared with a case where the amount of intake air is equal to the predetermined value, and the second controller delays the injection start time as compared with a case where the amount of intake air is within a second range being less than the predetermined value.

Control apparatus for engine

When high-pressure purge (the first purge control) (d-f) in which fuel evaporative gas in the fuel tank is emitted until internal pressure in the fuel tank decreases to a second predetermined pressure by closing a vapor solenoid valve, opening a fuel tank shutoff valve and a purge control valve when an engine is running finishes, connecting passage purge (the second purge control) (f-g) in which the fuel evaporative gas in vapor piping and purge piping is emitted up to a second predetermined volume (a second predetermined value) or above is performed, and then the fuel evaporative gas in a canister is emitted by opening the vapor solenoid valve (the third purge control) (g-h).

Fuel evaporative emission control device

A control device for a vehicle includes a driver request torque detection unit that detects a driver request torque, a restriction torque calculation unit that calculates a restriction torque being smaller than the driver request torque based on an external request, a corrected torque calculation unit that calculates a corrected torque being greater than the restriction torque, and an engine control unit that controls positions of a throttle valve and an exhaust bypass valve. The engine control unit controls the positions of the throttle valve and the exhaust bypass valve based on the driver request torque during an ordinary drive, and if a prescribed drive condition is satisfied, the engine control unit controls the position of the throttle valve based on the restriction torque and controls the position of the exhaust bypass valve based on the corrected torque.

Vehicle control device

A fuel injection control apparatus of an internal combustion engine, capable of controlling the amount of fuel, which is injected from a cylinder injection valve (second fuel injection valve), with high accuracy even when its amount is small, regardless of the operating state of the internal combustion engine, is provided. The fuel injection control device has a fuel pressure adjustment means which, when the injection form of the internal combustion engine is changed, adjusts the working state of a high pressure supply pump such that the amount of fuel injection from the second fuel injection valve stabilizes, before changing the working state of the high pressure supply pump in accordance with the injection form.

Fuel injection control apparatus of internal combustion engine

A fuel injection control apparatus of an internal combustion engine, which can appropriately control the amount of fuel injection from an in-cylinder injection valve so as to achieve a desired air-fuel ratio, regardless of the operating state of the internal combustion engine, is provided. The fuel injection control apparatus comprises: an additional injection means which, when determining that the operating state of the internal combustion engine is a transient state, allows the in-cylinder injection valve to inject a fuel amount conformed to a changing intake air amount; and a subtraction means for subtracting a minimum fuel amount, injectable from the in-cylinder injection valve, from a fuel amount to be injected, before injection by the additional injection means is performed.

An engine controlling apparatus controls a cylinder injected volume of fuel injected from a cylinder injection valve of an engine into a cylinder, and a port injected volume of fuel injected from a port injection valve into an intake port. The engine controlling apparatus includes an adhesion volume calculator to calculate a cylinder adhesion volume of fuel adhering to the cylinder, the fuel being injected from the cylinder injection valve, and a port adhesion volume of fuel adhering to the intake port, the fuel being injected from the port injection valve. The engine controlling apparatus further includes a controller to control the cylinder injected volume and the port injected volume based on both the cylinder adhesion volume and the port adhesion volume.

Engine controlling apparatus

An apparatus for estimating temperatures of a vehicle includes an acquirer to acquire an engine correlated temperature correlated with the temperature of an engine when the engine is stopping. The apparatus further includes an estimator to estimate a catalyst temperature of a catalyst disposed in an exhaust system of the engine, based on an inlet gas temperature estimated through a first-order lag operation with an exhaust-manifold temperature at a stop of the engine as an initial temperature and the engine correlated temperature as a target temperature.

Apparatus for estimating temperatures of vehicle

A control device for an internal combustion engine, which can accurately estimate an intake air amount introduced from an intake system into an internal combustion engine, is provided. The control device calculates the change amount of an air amount in an upstream section upstream of a throttle valve of the intake system based on the pressure and temperature of air in the upstream section; calculates a throttle passage air amount flowing out to an intake manifold, which is a section downstream of the throttle valve, based on the change amount and an introduced air amount flowing into a supercharger; and calculates the intake air amount based on the throttle passage air amount.

A fuel injection control apparatus of an engine, which can inhibit a learning time from lengthening, is provided. With the fuel injection control apparatus, learning control over one of a first fuel injection valve and a second fuel injection valve is exercised in an operating region of the engine where fuel is injected from each of the first fuel injection valve and the second fuel injection valve, and the change rate of a learning value by the learning control is altered in accordance with an injection ratio between the first fuel injection valve and the second fuel injection valve.

Fuel injection control apparatus of engine

A control apparatus for an engine introduces purge gas containing fuel gas evaporated from a fuel tank into an intake system includes an air-fuel ratio calculation unit that calculates an air-fuel ratio (AF) of the engine, and a purge rate calculation unit that calculates a purge rate (R) corresponding to an introduction rate of the purge gas. The control apparatus further includes a concentration calculation unit that calculates a concentration (K) of the purge gas based on the air-fuel ratio (AF) calculated by the air-fuel ratio calculation unit and the purge rate (R) calculated by the purge rate calculation unit. A decision unit permits or inhibits the concentration calculation unit to calculate the concentration (K) based on the purge rate (R) calculated by the purge rate calculation unit. The estimation accuracy of the concentration (K) of purge gas is improved.

Control apparatus for an engine

A control device for a hybrid vehicle, which can inhibit damage to an exhaust purification catalyst and also suppress deterioration of drivability, is provided. The control device exercises catalyst protective control, which inhibits operation of an engine and drives a traction motor, if a state where an exhaust air-fuel ratio detected by an exhaust air-fuel ratio detection unit is lean continues for a first predetermined time or longer.

Control device for hybrid vehicle

A controlling apparatus for an engine includes a purge path connected to a sealing-type fuel tank and an intake system of an engine and is configured to allow purge gas containing evaporated fuel from the fuel tank to flow therethrough. A purge valve placed in the purge path is configured to adjust a flow rate of the purge gas. A calculation unit calculates a degree of opening of the purge valve based on a target introduction ratio of the purge gas, and a controlling unit controls the purge valve so as to establish the degree of opening calculated by the calculation unit. The calculation unit corrects, in high-pressure purge performed when a pressure in the fuel tank increases exceeding a predetermined pressure, the degree of opening using a tank pressure flow velocity correction coefficient K2 corresponding to an upstream pressure of the purge valve.

Growing community of inventors

Okazaki, Japan

Toshiyuki Miyata