GAS REGULATOR FOR A MULTI-FUEL ENGINE AND METHOD OF OPERATING SAME

• US 20160153371A1
• Filed: 02/09/2016
• Published: 06/02/2016
• Est. Priority Date: 02/09/2016
• Status: Abandoned Application

• Current Assignee: Caterpillar Incorporated
• Original Assignee: Caterpillar Incorporated
• Inventors: GE, Xinyu
• Application Number:
  US15/018,892
• Publication Number:
  US 20160153371A1
• Time in Patent Office: Days
• CPC Class Codes: F02D 19/0605 to adjust the fuel pressure or temperature
• CPC Class Codes: F02D 19/0626 Measuring or estimating parameters related to the fuel supply system
• CPC Class Codes: F02D 19/0678 Pressure or flow regulators therefor; Fuel metering valves therefor
• CPC Class Codes: F02D 2200/0602 Fuel pressure
• CPC Class Codes: F02D 2200/0611 Fuel type, fuel composition or fuel quality
• CPC Class Codes: F02D 41/0025 Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
• CPC Class Codes: F02D 41/0027 the fuel being gaseous non-electrical control F02D19/02
• CPC Class Codes: Y02T 10/30 Use of alternative fuels, e.g. biofuels

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.

Claims

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.