Mixture control unit for use with the control system of a soil venting apparatus

Patent · Tue Apr 07 04:00:00 EDT 1992

OSTI ID:5105418

Davis, T L; Baverstock, R; Bass, D

This patent describes a mixture control unit to vary the amount and combination of a source gas, and a supplemental fuel to provide a mixture control fuel to an internal combustion engine. It comprises a body having an internal chamber and further having an outlet aperture from the chamber, a first valve for introducing source gas into the chamber, the first valve having a range of motion from fully closed to fully open, a second valve for introducing supplemental fuel into the chamber, the second valve having a range of motion from fully closed to fully open, a bonnet attached to the body forming a second chamber between the body and bonnet, a diaphragm bisecting the second chamber to form an upper chamber and a lower chamber, the diaphragm having a range of motion from a first position through an intermediate position to a second position responsive to a vacuum level applied to the vacuum port, means connecting the diaphragm to the first controllable valve, the connection means positioning the first controllable valve from the fully closed position to the fully open position responsive to position of the diaphragm between the first position and intermediate position, the connection means connecting the diaphragm to the second controllable valve to position the second controllable valve from the fully closed position to the fully open position proportional to the position of the diaphragm between the intermediate position, and second position, resilient means urging the diaphragm into the second position.

• Assignee: VR Systems, Inc., Anaheim, CA (United States)
• Patent Number(s): A; US 5101799
• Application Number: PPN: US 7-743873
• OSTI ID: 5105418
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
330603 -- Vehicle Design Factors-- Engine System
CONTROL SYSTEMS
DESIGN
ENGINES
FUEL SYSTEMS
HEAT ENGINES
INTERNAL COMBUSTION ENGINES