US 5,161,496 AGranted

Fuel injection system for internal combustion engines

AssigneeHonda Giken Kogyo Kabushiki Kaisha

InventorsSeiya Matsushima, Yukio Sugimoto, Ryuichi Kimata, Ryhei Tamamoto, Megumi Tanaka

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Abstract

A fuel injection system for an internal combustion engine comprises at least one fuel injection valve for supplying fuel into the intake passage of the engine, an electronic control unit responsive to operating conditions of the engine for controlling a time period over which the fuel injection valve is opened and timing for opening the fuel injection valve, a generator responsive to rotation of a flywheel for generating electric power, the generator being connected to an ignition device and the electronic control unit and forming power supplies for driving the ignition device and the electronic control unit, a fuel pump arranged to be driven in unison with the flywheel by torque transmitted from the flywheel, and a pressure regulator for controlling pressure of fuel supplied from the fuel pump to the fuel injection valve.

Claims8

Dependent claims

An electronically-controlled fuel injection system with no battery for an internal combustion engine including a recoil starter, a flywheel fixed to an output shaft of said engine for rotation therewith and rotatable by operation of said recoil starter, an ignition device, and an intake passage, said fuel injection system comprising:

at least one fuel injection valve for supplying fuel into said intake passage;
control means responsive to operating conditions of said engine for controlling a time period over which said fuel injection valve is opened and timing for opening said fuel injection valve;
generator means provided integrally on said flywheel and responsive to rotation of said flywheel for generating electric power, said generator means being connected to said ignition device and said control means and forming power supplies for driving said ignition device and said control means;
a fuel pump arranged to be driven in unison with said flywheel by torque transmitted from said flywheel for pressurizing fuel supplied to said fuel injection valve;
and
a pressure regulator for controlling pressure of fuel supplied from said fuel pump to said fuel injection valve.

3 more elements

An internal combustion engine comprising:

a recoil starter;
a flywheel fixed to an output shaft of said engine for rotation therewith and rotatable by operation of said recoil starter;
an ignition device;
an intake passage;
at least one fuel injection valve for supplying fuel into said intake passage;
electronic control means with no battery and responsive to operating conditions of said engine for controlling a time period over which said fuel injection valve is opened and timing for opening said fuel injection valve;
generator means provided integrally on said flywheel and responsive to rotation of said flywheel for generating electric power, said generator means being connected to said ignition device and said control means and forming power supplies for driving said ignition device and said control means;
a fuel pump arranged to be driven in unison with said flywheel by torque transmitted from said flywheel for pressurizing fuel supplied to said fuel injection valve;
and
a pressure regulator for controlling pressure of fuel supplied from said fuel pump to said fuel injection valve.

7 more elements

Dependencies are inferred from the claim text.