Mitsubishi Denki Kabushiki Kaisha

Yoshinobu Morimoto

Satoshi Komurasaki

Atsushi Ueda

Youichi Kadota

Ryohei Uchida

Takeo Sasaki

Mitsuru Kitano

A knock suppression system for an internal combustion engine in which the occurrence of knocks is suppressed by quickly providing a corresponding control signal previously stored in a memory and determined on the basis of operating conditions of the engine so that knocks can be effectively suppressed. As the operating conditions vary due to change in ignition timing, A/F ratio, combustion chamber temperature, inlet air temperature, humidity, or the like, the control signal is corrected and updated to compensate for the change in knock level. Also, even at the transient state of the engine where the factors introducing knocks largely vary, a correction control signal corresponding to the variations during the transient operation can be carried out, thereby effectively and quickly suppressing engine knocks.

Knock suppression system for internal combustion engine

A knocking control system for an I.C.E. includes a knock detector, and an apparatus for retarding the timing in response to the detection of knocking. This apparatus includes an arithmetic device and a memory map for storing retard values and accessed according to intake pressure (engine load) and r.p.m. values. The map value is read out by the arithmetic means is generally corrected on the basis of the present knock value, and the corrected retard value is used to control ignition and may be stored in the memory map to replace the read out value.

Knocking control system for internal combustion engine

An engine control apparatus equips with an air flow meter for generating a signal having a frequency proportional to an air flow rate for feeding into the engine. A circuit for monitoring an arithmetic and logic unit is equipped to detect a fault of the arithmetic and logic unit thereby switching a control of a fuel feed valve from the control by the arithmetic and logic unit to a monostable multivibrator so as to prevent an inoperability of driving of a car.

Fuel control apparatus for internal combustion engine

Four thyristors are interconnected into an AC bridge circuit. With an AC source connected across inputs to the bridge circuit, a DC motor is connected across outputs of the bridge circuit while the thyristors are operated in the phase control mode to control the power supply to the motor from the AC source. In the absence of the AC source the DC motor is serially connected to a battery across the outputs of the bridge circuit with the thyristors operated in the chopping control mode. Also, in the presence of the AC source, a rectifier bridge including thyristors and diodes can be connected across the battery to exclusively charge it from the AC source.

Growing community of inventors

Himeji, Japan

Yoshinobu Morimoto