Starting system of an internal combustion engine

Patent · Tue Jun 30 04:00:00 EDT 1987

OSTI ID:6190995

Inoguchi, K; Iwakura, Y; Tanaka, H; Umehara, J

This patent describes a starting system of an internal combustion engine started by a motor, comprising: a carburetor housing having an air intake passage; a drive means for generating electric pulses of varying voltages, widths and periods. The voltage of the pulses is relatively lower when the engine is in a cranking state; an electromagnetically operated fuel resupply pump that is electrically connected to and powered by the electric pulses generated by the drive means for feeding auxiliary fuel to the intake passage of the carburetor housing; the output of the pump is dependent upon the pulse voltage, the pulse width and the pulse period; and control means for controlling the drive of the fuel resupply pump by drive means; the control means include a period decision circuit for determining the period of the pulse voltage applied to the pump; a pulse width correction circuit for lengthen the impression time for the pulse voltage applied to the pump when the engine is in a cranking state so that the fuel output of the fuel resupply pump is sufficient to start the engine despite the lower pulse voltage associated with the cranking state of the engine.

• Assignee: Daihatsu Motor Co., Ltd., Oosaka and Aisan Kogyo Kabushiki Kaisha, Aichi
• Patent Number(s): US 4676204
• OSTI ID: 6190995
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
AIR FLOW
CARBURETORS
COMPUTERIZED CONTROL SYSTEMS
CONTROL SYSTEMS
ELECTRIC MOTORS
ELECTRIC POTENTIAL
ELECTROMAGNETIC PUMPS
ENGINES
FLUID FLOW
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
GAS FLOW
HEAT ENGINES
IGNITION SYSTEMS
INTAKE STRUCTURES
INTERNAL COMBUSTION ENGINES
MECHANICAL STRUCTURES
MOTORS
PULSES
PUMPS