Fuel injection system for internal combustion engine

Patent · Tue Nov 04 04:00:00 EST 1986

OSTI ID:6999630

Nagao, A; Yoshioka, S; Oda, H; Tokushima, T

A fuel injection system is described for an internal combustion engine having cylinders, separate intake passages for the respective cylinder, and fuel injection valves respectively disposed in the intake passages for injecting fuel into the corresponding cylinders. The fuel injection system comprises an airflow sensor for detecting the amount of intake air, acceleration detecting means for detecting acceleration of the engine, engine speed detecting means for detecting the rpm of the engine, and a fundamental fuel injection amount determining means for determining a fundamental amount of fuel to be injected for each cylinder according to the outputs of the airflow sensor and the engine speed detecting means. A fuel injection amount correcting means increases the fundamental amount of fuel when the engine is to be accelerated according to the output of the acceleration detecting means. The fuel injection amount correcting means increases the fundamental amount of fuel by an increasing amount which differs from cylinder to cylinder taking into account the difference between the actual amount of intake air and output of the airflow sensor. The fuel injection amount correcting means has means for detecting the cylinder whose amount of fuel is to be first increased after acceleration of the engine is detected.

• Assignee: Mazda Motor Corp.
• Patent Number(s): US 4620519
• OSTI ID: 6999630
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
ACCELERATION
AIR FLOW
COMPUTERIZED CONTROL SYSTEMS
CONTROL EQUIPMENT
CONTROL SYSTEMS
CYLINDERS
ENGINES
EQUIPMENT
FLOW REGULATORS
FLOWMETERS
FLUID FLOW
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
GAS FLOW
HEAT ENGINES
INTAKE STRUCTURES
INTERNAL COMBUSTION ENGINES
MEASURING INSTRUMENTS
MECHANICAL STRUCTURES
METERS
VALVES
VELOCITY