Electronic control apparatus for an internal combustion engine

Patent · Tue Jan 21 04:00:00 EST 1986

OSTI ID:5927613

Hirayama, T; Sakamoto, S; Shiida, M; Baba, S

An engine control apparatus is described having a crank angle sensor for producing an output signal at every predetermined rotational angle of an engine shaft, an arithmetic processing unit for executing arithmetic operations in accordance with a program, and an input/output circuit. The input/output circuit includes timer means for producing a timing signal every time a preset period for measuring the rotational speed of the engine elapses, a crank angle counter for counting output pulses derived from the crank angle sensor, an overflow detecting means for detecting each occurrence of an overflow in the counter and for generating an overflow signal in response thereto.

• Assignee: Hitachi, Ltd., Tokyo
• Patent Number(s): US 4566069
• OSTI ID: 5927613
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
COMPUTERIZED CONTROL SYSTEMS
CONTROL SYSTEMS
DATA PROCESSING
ENGINES
HEAT ENGINES
INCIDENCE ANGLE
INTERNAL COMBUSTION ENGINES
MEMORY DEVICES
MOTION
PROCESSING
PULSES
READOUT SYSTEMS
ROTATION
SIGNALS
VELOCITY