# US 2014/0150749 A1 · Control system for engine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0150749 A1 - Document ID: US20140150749A1 - Status: Published application - Kind: A1 - Application number: 13/692,595 - Filed: 2012-12-03 - Published: 2014-06-05 - Earliest claimed: 2012-12-03 - Assignees: Electro-Motive Diesel, Inc. - Inventors: Aaron Foege; David T. Montgomery; Farhan Devani; Scott B. Fiveland - Web page: https://patentgrep.com/patent/US20140150749A1 ## CPC - F02D 41/3064: {with special control during transition between modes} - F02D 19/0613: {Switch-over from one fuel to another (F02D19/081 takes precedence)} - F02D 19/0615: {being initiated by automatic means, e.g. based on engine or vehicle operating conditions} - F02D 19/0621: {Purging of the fuel system} - F02D 41/0025: {Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures} - F02D 19/0642: {at least one fuel being gaseous, the other fuels being gaseous or liquid at standard conditions} - F02D 19/0649: {Liquid fuels having different boiling temperatures, volatilities, densities, viscosities, cetane or octane numbers} - F02D 41/0027: {the fuel being gaseous (non-electrical control F02D19/02)} - F02D 41/0087: {Selective cylinder activation, i.e. partial cylinder operation (deceleration cut-off F02D41/123)} - Y02T 10/30: Use of alternative fuels, e.g. biofuels - F02D: CONTROLLING COMBUSTION ENGINES (vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed B60K31/00; conjoint control of vehicle sub-units of different type or different function, road vehicle drive control systems for purposes other than the control of a single sub-unit B60W) - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A control system for an engine including a fuel delivery system and an ignition source is provided. The control system includes a detector, a processor, and at least one actuator. The detector is configured to sense a signal to change from a compression ignited fuel to a spark ignited fuel. The processor is configured to receive the signal from the detector and generate an actuation signal. The actuator is configured to receive the actuation signal, vary an operating speed of the engine, and selectively control at least one of the fuel delivery system and the ignition source. ## Claims ### Claim 1 A control system for an engine including a fuel delivery system and an ignition source, the control system including: a detector configured to sense a signal to change from a compression ignited fuel to a spark ignited fuel; a processor configured to receive the signal from the detector and generate an actuation signal; and at least one actuator configured to receive the actuation signal, vary an operating speed of the engine, and selectively control at least one of the fuel delivery system and the ignition source. ### Claim 2 (depends on 1) The control system of claim 1, wherein the actuator is configured to shut off a delivery of the compression ignited fuel from the fuel delivery system to the engine for one or more motoring cycles of the engine. ### Claim 3 (depends on 2) The control system of claim 2, wherein the actuator is configured to increase an amount of the compression ignited fuel delivered to the engine prior to the one or more motoring cycles of the engine. ### Claim 4 (depends on 3) The control system of claim 3, wherein the actuator is configured to increase the operating speed of the engine. ### Claim 5 (depends on 1) The control system of claim 1, wherein the actuator is configured to switch on a delivery of the spark ignited fuel from the fuel delivery system to the engine after one or more motoring cycles of the engine. ### Claim 6 (depends on 5) The control system of claim 5, wherein the actuator is configured to switch on the ignition source after the one or more motoring cycles of the engine. ### Claim 7 (depends on 1) The control system of claim 1, wherein the actuator is configured to switch on a delivery of the compression ignited fuel from the fuel delivery system to the engine after one or more motoring cycles of the engine. ### Claim 8 A power system including: an engine including: a fuel delivery system configured to deliver at least one of a compression ignited fuel and a spark ignited fuel; and an ignition source configured to ignite one or more of the two fuel types; and a control system operatively connected to the engine, the control system including: a detector configured to sense a signal to change from the compression ignited fuel to the spark ignited fuel; a processor configured to receive the signal from the detector and generate an actuation signal; and at least one actuator configured to receive the actuation signal, vary an operating speed of the engine, and selectively control at least one of the fuel delivery system and the ignition source. ### Claim 9 (depends on 8) The power system of claim 8, wherein the actuator is configured to shut off a delivery of the compression ignited fuel from the fuel delivery system to the engine for one or more motoring cycles of the engine. ### Claim 10 (depends on 9) The power system of claim 9, wherein the actuator is configured to increase an amount of the compression ignited fuel delivered to the engine prior to the one or more motoring cycles of the engine. ### Claim 11 (depends on 10) The power system of claim 10, wherein the actuator is configured to increase the operating speed of the engine. ### Claim 12 (depends on 8) The power system of claim 8, wherein the actuator is configured to switch on a delivery of the spark ignited fuel from the fuel delivery system to the engine after one or more motoring cycles of the engine. ### Claim 13 (depends on 12) The power system of claim 12, wherein the actuator is configured to switch on the ignition source after the one or more motoring cycles of the engine. ### Claim 14 (depends on 8) The power system of claim 8, wherein the actuator is configured to switch on a delivery of the compression ignited fuel from the fuel delivery system to the engine after one or more motoring cycles of the engine. ### Claim 15 A method of changing a fuel type in an engine, the method including: allowing delivery of a compression ignited fuel into the engine; igniting the compression ignited fuel in the engine; sensing a signal to change a fuel type; processing the signal to generate an actuation signal; varying an operating speed of the engine based on the actuation signal; selectively controlling one or more of a fuel delivery system and an ignition source of the engine based on the actuation signal; and allowing delivery of a spark ignited fuel into the engine. ### Claim 16 (depends on 15) The method of claim 15, wherein selectively controlling the fuel delivery system includes shutting off a delivery of the compression ignited fuel from the fuel delivery system to the engine for one or more motoring cycles of the engine. ### Claim 17 (depends on 16) The method of claim 16, wherein selectively controlling the fuel delivery system includes increasing an amount of the compression ignited fuel delivered to the engine prior to the one or more motoring cycles of the engine. ### Claim 18 (depends on 17) The method of claim 17, wherein varying an operating speed of the engine includes increasing an operating speed of the engine. ### Claim 19 (depends on 15) The method of claim 15, wherein selectively controlling the fuel delivery system includes switching on a delivery of a spark ignited fuel from the fuel delivery system to the engine after one or more motoring cycles of the engine. ### Claim 20 (depends on 19) The method of claim 19, wherein selectively controlling the ignition source includes switching on the ignition source after the one or more motoring cycles of the engine.