System for controlling mass flow rates of two gases

Details System for controlling mass flow rates of two gases System for controlling mass flow rates of two gases

1986-08-21

1989-06-13

Hepperle, Stephen

Fluid handling

Processes

With control of flow by a condition or characteristic of a...

13710119, G05D 1113

Patent

active

048382957

ABSTRACT:
A control system for internal combustion engines, including a first conduit for the flow of intake air, and a second conduit for the flow of natural gas to be mixed with the air for combustion. The flow of the air is variable over a range of mass flow rates during operation of the engine and an air mass sensor is positioned to sense the mass flow rate in the first conduit and generate a first flow rate signal indicating the mass flow rate. A natural gas mass sensor is positioned to sense the mass flow rate of the gas in the second conduit and to generate a second flow rate signal indicating the mass flow rate of the natural gas. The first and second flow rate signals are compared in an electronic controller that generates a control signal if the first and second flow rates vary from a predetermined ratio. The ratio is selected to provide a substantially stoichiometric ratio of air and natural gas. A valve is provided to adjustably control the flow rate of the natural gas in response to the control signal to maintain the preselected ratio. A sensor and shutoff valve are also provided for terminating the flow of the natural gas when its pressure falls below a predetermined pressure, allowing immediate flow of gasoline to the engine, thus assuring smooth, continued operation of the vehicle. A throttle body has a natural gas distribution ring in the throat of the body and provides a curtain flow of gas.

REFERENCES:
patent: 2326205 (1943-08-01), Dowdell
patent: 2394297 (1946-02-01), Fayles
patent: 2926684 (1960-03-01), Replogle
patent: 3890995 (1975-06-01), Miller et al.
patent: 3935851 (1976-02-01), Wright et al.
patent: 4125093 (1978-11-01), Platzer
patent: 4253428 (1981-03-01), Billings et al.
patent: 4277254 (1981-07-01), Hanson
patent: 4280968 (1981-07-01), Smeets
patent: 4335697 (1982-06-01), McLean
patent: 4411234 (1983-10-01), Middleton
patent: 4523461 (1985-06-01), Watkins
patent: 4537172 (1985-08-01), Kanehara et al.

Affiliated with

Also associated with

Rating

System for controlling mass flow rates of two gases does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System for controlling mass flow rates of two gases, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for controlling mass flow rates of two gases will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1269618