Gas regulator for a multi-fuel engine and method of operating same

Patent metadata

Field	Value
Publication number	US-2016153371-A1
Application number	US-201615018892-A
Country	US
Kind code	A1
Filing date	Feb 9, 2016
Priority date	Feb 9, 2016
Publication date	Jun 2, 2016
Grant date	—

Abstract

A gas regulator includes a first sensor adapted to monitor change in gas quality. A regulator valve is adapted to change a first pressure value present at an output of gas regulator. A second sensor is adapted to determine a regulator valve position. An actuator is adapted to change regulator valve position based on a second pressure value which is determined based on at least one of a type of a fuel, gas quality, multi-fuel engine operating conditions, fresh air pressure and temperature, a third pressure value and temperature value of fuels. A third sensor coupled downstream to the gas regulator, and is adapted to measure first pressure value. The gas regulator is in fluid communication with a switch valve which selectively allows at least one of the fuels therethrough. The actuator changes regulator valve position based on a comparison between second pressure value and first pressure value.

First claim

What is claimed is:

1 . A gas regulator for controlling and supplying fuel to a multi-fuel engine, the gas regulator comprising:
a first sensor adapted to monitor change in gas quality; a regulator valve adapted to change a first pressure value present at an output of the gas regulator; a second sensor adapted to determine a regulator valve position; and an actuator adapted to change the regulator valve position based on a second pressure value, wherein the second pressure value is determined, by the gas regulator, based on at least one of a type of a fuel, the gas quality, the multi-fuel engine operating conditions, fresh air pressure and temperature, a third pressure value of plurality of fuels, and a temperature value of the plurality of fuels; wherein the gas regulator is coupled downstream to a third sensor, the third sensor is adapted to measure the first pressure value at the output of the gas regulator, and the gas regulator is in fluid communication with a switch valve that selectively allows at least one of the plurality of fuels therethrough; wherein the actuator changes the regulator valve position based on a comparison between the first pressure value and the second pressure value.

Assignees

• Caterpillar Inc

Inventors

• Ge Xinyu

Classifications

• F02D19/0678 Primary

  Pressure or flow regulators therefor; Fuel metering valves therefor · CPC title

• F02D19/0626

  Measuring or estimating parameters related to the fuel supply system · CPC title

• F02D41/0025

  Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures · CPC title

• F02D19/0605

  to adjust the fuel pressure or temperature · CPC title

• F02D2200/0611

  Fuel type, fuel composition or fuel quality · CPC title