Fuel system for crankcase scavenged two cycle spark ignition engines

Patent · Tue Jul 02 04:00:00 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
• Country of Publication: United States
• Language: English

Related Subjects

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