Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Denki K.k.

Mikuni Corporation

Shoichi Washino

Satoru Ohkubo

Mitsuo Shimotani

Setsuhiro Shimomura

Kenji Shima

Minoru Nishida

Toshihide Satake

Akira Okada

Eisho Nosaka

Futoshi Okawa

Hiromi Terashita

Yukinobu Nishimura

Hiroyoshi Suzuki

Akira Demizu

Seiji Wataya

Hajime Kako

Yoshiaki Kanno

Masaaki Miyazaki

Koji Ezumi

A bodily state detection apparatus comprising a CCD camera, an infrared LED device, a pickup image memory, a pupil extraction circuit and a bodily state judgment circuit. The CCD camera inputs images of a predetermined area including the subject person's face. The infrared LED device illuminates the subject person in such a way that the optical axis of the camera and the direction of the illumination coincide with each other. The pickup image memory stores temporarily the output data of the CCD camera. The pupil extraction circuit extracts the subject person's pupil position from the pickup images. The bodily state judgment circuit judges the subject person's bodily state by use of the result of pupil extraction performed by the pupil extraction circuit.

Bodily state detection apparatus

Processor for control including a data-flow processor

Disclosed is a data processor incorporating a timer function for measuring the time on the basis of a circulation time of a timer packet circulated through a circular pipe line for circulating said packet, a timer function for measuring the time by comparing the time information read from a time information reading means controlled by a process code having a packet with a preset time value and a timer function for measuring the time by comparing a timer packet given from outside at a predetermined timing with the preset time value.

Data-flow processor having timer control mechanism for effecting time

A combustion control device for internal combustion engines, comprising cylinder pressure detecting means for detecting the combustion pressure in a cylinder, crank angle detecting means for detecting a crank angle of the engine to be controlled, cylinder pressure monitoring means for finding and monitoring the waveform of the cylinder pressure based on the cylinder pressure detected by the cylinder pressure detecting means and a crank angle signal outputted from the crank angle detecting means, calculating means for calculating thermal efficiency based on the found waveform, and combustion control means for controlling the amount of fuel supply to the engine, ignition timing and the amount of exhaust gas recirculation, depending on the results of the calculation by the calculating means.

Combustion control device for internal combustion engines

There is disclosed a rotational speed control device of an internal combustion engine wherein a variation in torque which is a disturbance is detected in order to control the relation between the flow rate of intake air (or the quantity of fuel injected) and the amount of the electric current produced by an alternator, and to reduce the amount of the electric current produced by the alternator only during a period when an increment in the intake air (or the fuel injection) is delayed, thereby stabilizing the engine speed. Also disclosed is a rotational speed control device according to another embodiment of the present invention. This control device detects the variation in torque to control the relation between the amount of the electric current produced by the alternator, the flow rate of the intake air (or the quantity of fuel injected) and the ignition timing, to decrease the amount of the electric current produced by the alternator, and to advance the ignition timing only during a period when an increment in the intake air (or the fuel injection) is delayed, thereby stabilizing the engine speed.

Rotation speed control device of an internal combustion engine

A control device for an automotive engine provided with a fuel injection valve determines the current value of a parameter (e.g. the mean effective combustion pressure) indicative of the output power of the engine, and compares it to the target value thereof determined, for example, from the temporal change of the throttle opening degree. At least one of the parameters: the driving pulse width of the fuel injection valve (corresponding to the amount of fuel supply), the ignition timing, and the amount of intake air, is selected as a manipulated variable and controlled so as to reduce the difference between the current and target values of the parameter.

Control device for an internal combustion engine

An engine-start discriminating apparatus which comprises a cylinder pressure sensor for detecting a cylinder pressure in an internal combustion engine, a combustion parameter operating component for extracting for an arithmetic operation a parameter of combustion indicating a state of combustion in the engine on the basis of the output signal of the cylinder pressure sensor, and a start discriminating component for discriminating the starting of the engine on the basis of the output of the operating component.

Engine-start discriminating apparatus for an internal combustion engine

Method and device for controlling the operation of an engine for a

A fuel control apparatus for an internal combustion engine comprises a pressure sensor for detecting the pressure in a combination chamber and a crank angle sensor for detecting a crank angle. During compression stroke, a microcomputer calculates the difference in pressure in the combustion chamber between two crank angles, or differentiates the pressure in the combustion chamber with respect to the crank angle at an arbitrary crank angle. Then, the microcomputer normalizes the pressure difference between the two crank angles by the pressure difference between the two crank angles when the engine is in an arbitrary reference condition, for example, its start condition, or normalizes the differentiated pressure at the arbitrary crank angle by the differentiated pressure at the arbitrary crank angle when the engine is in the arbitrary reference condition, for example, its start condition. The microcomputer then calculates the product of an amount of charged air and the pressure difference or the pressure differentiated which has been normalized, thereby producing a basic fuel injection.

Fuel control apparatus for internal combustion engine

An engine control apparatus comprises a throttle sensor, a pressure sensor for detecting a pressure in the intake manifold of an engine as a value of the absolute pressure, an engine revolution speed detector, a zone detector for detecting the fact that a signal value indicating a degree of opening of a throttle valve and a signal value indicating an engine revolution speed fall in a predetermined atmospheric pressure detection zone and a processing unit to calculate a value of atmospheric pressure by adding a set value to a signal of pressure upon detecting said values being in the detection zone. A timer may be provided to detect the fact that the signal values of the degree of opening of the throttle valve and the engine revolution speed are continuously in the atmospheric pressure detection zone for a predetermined time.

Engine control apparatus

A fuel properties detecting aparatus for an internal combustion engine has a pressure detector to detect an inner pressure of cylinder, a crank angle detector to detect a crank angle of engine, and a control device which is adapted to receive signals from the pressure detector and the crank angle detector to thereby calculate an effective calorific value Q of fuel in an ignition cycle on the basis of an inner pressure of a cylinder P(.theta.) at a crank angle in compression and expansion strokes in an ignition cycle, a crank angle .theta. and a cylinder capacity V(.theta.), and to obtain an effective combustion rate K or a low level calorific value Hu of fuel. Fuel properties are detected by using at least one of the effective combustion rate K and the low level calorific value Hu, or a ratio of a fuel injection pulse width Ti to the low level calorific value Hu (Ti/Hu).

Fuel properties detecting apparatus for an internal combustion engine

An ignition timing control apparatus for an internal combustion engine includes a pressure detector for detecting an inner pressure of cylinder of the engine, a crank angle detector for detecting a crank angle of the engine, and a control device which receives the detection signals of the pressure detector and the crank angle detector so that an effective calorific value Q of fuel in one ignition cycle and an effective combustion rate K of fuel or a low level calorific value Hu of fuel are calculated on the basis of an inner pressure of cylinder P(.theta.) at a crank angle in compression and expansion strokes in the one ignition cycle, the crank angle .theta. and a cylinder capacity V(.theta.). Ignition timing is controlled based on at least one of the effective calorific value Q and the effective combustion rate K.

Ignition timing control appartaus for an internal combustion engine

An air-fuel ratio control apparatus for an internal combustion engine operates a signal of inner pressure of cylinder and a signal of crank angle position to obtain the maximum value of a rate of pressure increase in an ignition cycle or the mean value of the maximum values in a predetermined number of cycles, whereby a fuel injection quantity is controlled by using said value. An exhaust gas temperature may be used as well as the signals of the inner pressure of cylinder and the crank angle. In this case, a fuel injection quantity is controlled on the basis of a state quantity obtained by calculating the inner pressure of cylinder and a temperature of exhaust gas.

Air-fuel ratio control apparatus for an internal combustion engine

The maximum inner pressure of a cylinder of an internal combustion engine and the crank angle at the time when the maximum inner pressure takes place are detected. On the basis of the values as detected, a cylinder temperature is calculated whereby an amount of fuel to be injected to the cylinder, an air-fuel ratio or an ignition timing is controlled.

Growing community of inventors

Amagasaki, Japan

Shoichi Washino