Fuel injection pump of the distribution type

Patent · Tue Jul 08 04:00:00 EDT 1986

OSTI ID:5393912

Ohmori, T; Sumitani, S; Tani, T; Miyaki, M; Masuda, A

A distribution type fuel injection pump is described for delivering fuel to each of the combustion chambers in an internal combustion engine consisting of: pump housing means including a pumping head in which a pumping chamber is defined; first fuel supply means for supplying fuel to the pumping chamber; fuel pressurizing means for applying pressure to the fuel in the pumping chamber; distributor means for distributing and delivering the fuel, which has been pressurized in the pumping chamber, to each of the combustion chambers in the engine; control plunger means actuated by the fuel pressure in the pumping chamber and including a control cylinder bore defined in the pumping head and a control plunger fitted into the control cylinder bore, the control cylinder bore being partitioned into a first chamber to which the fuel pressure in the pumping chamber is transmitted and which serves to apply this pressure to one end of the control plunger, and a second chamber defined by the other end of the control plunger; second fuel supply means for supplying an adjusted amount of fuel to the second chamber and including a control passage connected to the second chamber and an electromagnetic valve for opening and closing the control passage; and escaping means for allowing the fuel to escape from the second chamber when the fuel pressure in the second chamber becomes higher than a certain value.

• Assignee: Nippondenso Co., Ltd., Kariya
• Patent Number(s): US 4598683
• OSTI ID: 5393912
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
COMBUSTION CHAMBERS
CONTROL EQUIPMENT
CYLINDERS
DESIGN
ELECTROMAGNETISM
ENGINES
EQUIPMENT
FLOW REGULATORS
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MAGNETISM
OPERATION
PRESSURE EFFECTS
PRESSURIZING
PUMPS
VALVES