Fuel mixture system and assembly

• US 9,845,744 B2
• Filed: 07/19/2016
• Issued: 12/19/2017
• Est. Priority Date: 07/22/2013
• Status: Expired due to Fees

• Current Assignee: Gaseous Fuel Systems Corporation
• Original Assignee: Gaseous Fuel Systems Corporation
• Inventors: Green, Jason
• Primary Examiner(s): Kwon, John
• Application Number:
  US15/213,603
• Publication Number:
  US 20170009681A1
• Time in Patent Office: 518 Days
• Field of Search: 701103, 701104, 701105, 701114, 701115, 123 1 A, 123434, 123436, 123679, 123681, 123 27 GE, 123525, 123526, 123527
• CPC Class Codes: F02D 19/0607 to adjust the fuel mass or volume flow
• CPC Class Codes: F02D 19/081 Adjusting the fuel composition or mixing ratio; Transitioning from one fuel to the other
• CPC Class Codes: F02D 19/10 peculiar to compression-ignition engines in which the main fuel is gaseous
• CPC Class Codes: F02D 35/027 using knock sensors
• 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: F02D 41/1446 the characteristics being exhaust temperatures
• CPC Class Codes: F02D 41/182 for the control of a fuel injection device
• CPC Class Codes: F02M 21/045 Vortex mixer
• CPC Class Codes: F02M 35/10386 for flow rate air flow meters in air cleaners F02M35/021; circuit arrangements for generating control signals by measuring intake air flow F02D41/18
• CPC Class Codes: Y02T 10/30 Use of alternative fuels, e.g. biofuels

Abstract

A system and attendant structural assembly operative to establish a coordinated mixture of gaseous and distillate fuels for an engine including an electronic control unit (ECU) operative to monitor predetermined engine data determinative of engine fuel requirements and structured to regulate ratios of the gaseous and distillate fuel of an operative fuel mixture for the engine. The system and assembly includes at least one mixing assembly comprising an integrated throttle body and air gas mixer directly connected to one another, wherein the throttle body is disposed in fluid communication with a pressurized gaseous fuel supply and the air gas mixer is disposed in fluid communication with a flow of intake air to a combustion section of the engine. In use, the throttle body is structured to direct a variable gaseous fuel flow directly to the air gas mixer for dispensing into the intake air flow to the combustion section.

Claims

1. A control system for establishing gaseous fuel input for an engine operative on a variable mixture of gaseous and distillate fuels, said control system comprising:

a monitor, said monitor comprising a plurality of sensors disposed and structured to monitor operating parameters over variable load conditions of the engine,

said plurality of sensors further comprising at least one mass airflow (MAF) sensor, at least one temperature sensor, and at least one knock sensor,

an electronic control unit (ECU) configured to interpretively process data from said monitor associated with said operating parameters, and

said ECU operative to establish a concentration of the gaseous fuel in the variable fuel mixture to comply with any of said operating parameters being monitored.

2. The control system as recited in claim 1 wherein one of said operating parameters comprises a mass flow rate of intake air to a combustion section of the engine.

3. The control system as recited in claim 2 wherein one of said operating parameters comprises an exhaust gas temperature of the engine.

4. The control system as recited in claim 3 wherein one of said operating parameters comprises engine knock.