Fuel system for crankcase scavenged two cycle spark ignition engines

Patent · Tue Jul 02 00:00:00 EDT 1991

OSTI ID:5936033

Siegler, F

This patent describes a fuel system for a crankcase scavenged two cycle spark ignition engine having a pulse port to its crankcase and an intake port for a cylinder of the engine. It comprises a liquid propane gas bottle containing therein liquid propane gas, and including a built in check valve and pressure relief valve; a pressure reducing and regulating valve attached to the liquid propane gas bottle; a carburetor housing an automatic main valve comprised of a gas valve and an oil valve both operated by actuator means and also housing a venture and a needle control valve interconnected to the venture; a gas line connecting the pressure reducing and regulating valve to the gas valve; an oil reservoir containing oil and connected to the oil valve; the oil valve connected through an orifice to the venture; the automatic main valve connected to the pulse port of the engine crankcase and also connected to the intake port of the engine cylinder through connection to the venture; and spring actuated means for opening and closing the control valve.

• Assignee: NOV; NOV-92-011083; EDB-92-041189
• Patent Number(s): US 5027758; A
• Application Number: PPN: US 7-549812
• OSTI ID: 5936033
• Resource Relation: Patent File Date: 9 Jul 1990
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
FUEL SYSTEMS
DESIGN
SPARK IGNITION ENGINES
CARBURETORS
LIQUEFIED GASES
PROPANE
VALVES
ALKANES
CONTROL EQUIPMENT
ENGINES
EQUIPMENT
FLOW REGULATORS
HEAT ENGINES
HYDROCARBONS
INTERNAL COMBUSTION ENGINES
ORGANIC COMPOUNDS
330101* - Internal Combustion Engines- Spark-Ignition
330603 - Vehicle Design Factors- Engine System