Fuel injection apparatus

Patent · Tue Jun 10 00:00:00 EDT 1986

OSTI ID:5576456

Omori, T; Sakakibara, S; Kato, M; Masuda, A

A fuel injection apparatus is described for supplying fuel from a fuel tank to at least one combustion chamber of an internal combustion engine, comprising: an injector housing defining therein a pressure cylinder bore, an injection cylinder bore and a timing cylinder bore connected in series with the pressure cylinder bore; a pressure plunger, fitted in the pressure cylinder bore and having one end defining, in the pressure cylinder bore, a pressure pump chamber communicating with the injection cylinder bore and the timing cylinder bore; first fuel supply means for supplying fuel from the fuel tank to the pressure pump chamber; pressurizing means for reciprocating the pressure plunger in the pressure cylinder bore in synchronism with the engine operation so as to pressurize fuel in the pressure pump chamber; an injection plunger, having a diameter smaller than the pressure plunger, fitted in the injection cylinder bore and having two ends defining, in the injection cylinder bore, an injection pump chamber and a first communicating chamber communicating with the pressure pump chamber; second fuel supply means for adjusting the quantity of the fuel from the fuel tank in accordance with engine operation conditions so as to supply the adjusted fuel quantity to the injection pump chamber; injection valve means for injecting the fuel into the fuel pump chamber toward a combustion chamber of the engine when the pressure in the pressure pump chamber is applied to the injection plunger through the first communicating chamber, and the fuel pressure in the injection pump chamber reaches a predetermined injection pressure.

• Assignee: Nippondenso Co., Ltd., Kariya
• Patent Number(s): US 4593664
• OSTI ID: 5576456
• Resource Relation: Patent File Date: Filed date 28 Aug 1985
• Country of Publication: United States
• Language: English

Related Subjects

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