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US 12,546,266 B2Granted
Systems for a multi-fuel capable engine
AssigneeTransportation IP Holdings, LLC
InventorsKevin Michael Fisher, Shawn Gallagher, Jacob Kenneth Pedder, Daniel Yerace
Life of this patent
Estimating the term…
Abstract
Various methods and systems are provided for a multi-fuel capable engine. The system includes a liquid fuel system to deliver liquid fuel to an engine, a gaseous fuel system to deliver gaseous fuel to the engine, and a control system. The control system can control and test the liquid and gaseous fuel systems.
Claims20
A method for operating an engine adapted to operate with a liquid fuel and a gaseous fuel, the method comprising:
- receiving a first request to vent excess gaseous fuel from a gaseous fuel system, wherein the gaseous fuel system comprises one or more valves controlling flow of the gaseous fuel and a gaseous fuel supply fluidly coupled to the engine via a gaseous fuel supply line;
- and
- responsive to the first request:
- operating the engine at idle;
- send a second request to stop sending the gaseous fuel from the gaseous fuel supply to the engine;
- and
- send a third request to control the one or more valves for gaseous fuel remaining in the gaseous fuel supply line to be vented.
4 more elements
A system, comprising:
- a liquid fuel system configured to deliver a liquid fuel to an engine;
- a gaseous fuel system configured to deliver a gaseous fuel to the engine, the gaseous fuel system comprising:
- a gaseous fuel supply fluidly coupled to the engine via a gaseous fuel supply line;
- and
- one or more valves controlling flow of the gaseous fuel;
- a control system configured to, responsive to a request to vent excess gaseous fuel in the gaseous fuel system:
- operate the engine at idle;
- send a first request to stop sending the gaseous fuel from the gaseous fuel supply to the engine;
- and
- send a second request to control at least one of the one or more valves for gaseous fuel remaining in the gaseous fuel supply line to be vented.
7 more elements
A system, comprising:
- a liquid fuel system configured to deliver a liquid fuel to an engine;
- a gaseous fuel system configured to deliver a gaseous fuel to the engine;
- and
- a control system configured to:
- during a gaseous fuel system test mode,
- control the liquid fuel system and the gaseous fuel system to deliver the liquid fuel and the gaseous fuel, respectively, to the engine over a range of engine operating points including each notch throttle setting and/or a range of ratios of an amount of gaseous fuel relative to an amount of liquid fuel;
- and
- indicate degradation of the gaseous fuel system based on engine output at each of the engine operating points.
5 more elements
Dependencies are inferred from the claim text.