# US 2014/0156169 A1 · Control system for multi-cylinder engine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0156169 A1 - Document ID: US20140156169A1 - Status: Published application - Kind: A1 - Application number: 13/692,651 - Filed: 2012-12-03 - Published: 2014-06-05 - Earliest claimed: 2012-12-03 - Assignees: Electro-Motive Diesel, Inc. - Inventors: Aaron Foege; David Todd Montgomery; Farhan Devani; Scott B. Fiveland - Web page: https://patentgrep.com/patent/US20140156169A1 ## CPC - F02D 41/008: {Controlling each cylinder individually} - F02D 19/0615: {being initiated by automatic means, e.g. based on engine or vehicle operating conditions} - 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 41/3064: {with special control during transition between modes} - F02B 3/06: with compression ignition (compression ignition engines using air or gas for blowing fuel into compressed air in cylinder F02B13/02) - F02B 2075/125: {Direct injection in the combustion chamber for spark ignition engines, i.e. not in pre-combustion chamber} - F02D 19/0647: {the gaseous fuel being liquefied petroleum gas [LPG], liquefied natural gas [LNG], compressed natural gas [CNG] or dimethyl ether [DME]} - 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)} - 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) - F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G) - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A control system for fuel delivery systems associated with cylinders of a multi-cylinder engine is provided. The control system includes a detector, a processor, and an actuator. The detector is configured to sense a signal to change from a compression ignited fuel to a spark ignited fuel in a pre-determined number of cylinders. The processor is configured to receive the signal from the detector and generate one or more actuation signals. The controller is configured to receive the actuation signals and tandemly control the fuel delivery systems associated with the pre-determined cylinders based on the actuation signals. ## Claims ### Claim 1 A control system for fuel delivery systems associated with cylinders of a multi-cylinder engine, the control system including: a detector configured to sense a signal to change from a compression ignited fuel to a spark ignited fuel in a pre-determined number of cylinders; a processor configured to receive the signal from the detector and generate one or more actuation signals; and a controller configured to receive the actuation signals and tandemly control the fuel delivery systems associated with the pre-determined cylinders based on the actuation signals. ### Claim 2 (depends on 1) The control system of claim 1, wherein the pre-determined cylinders is selected based on an operating parameter of the multi-cylinder engine. ### Claim 3 (depends on 2) The control system of claim 2, wherein the operating parameter is one of load and speed of the multi-cylinder engine. ### Claim 4 (depends on 1) The control system of claim 1, wherein the controller is configured to tandemly shut off a delivery of the compression ignited fuel from the fuel delivery systems associated with the pre-determined cylinders. ### Claim 5 (depends on 4) The control system of claim 4, wherein the controller is configured to selectively switch on a delivery of the spark ignited fuel from the fuel delivery systems associated with the pre-determined cylinders. ### Claim 6 (depends on 5) The control system of claim 5, wherein the controller is configured to switch on one or more ignition sources associated with the pre-determined cylinders. ### Claim 7 A power system including: a multi-cylinder engine; a plurality of fuel delivery systems associated with cylinders of the multi-cylinder engine and configured to deliver at least one of a compression ignited fuel and a spark ignited fuel; and a control system operatively connected to the fuel delivery systems, the control system including: a detector configured to sense a signal to change from the compression ignited fuel to the spark ignited fuel in a pre-determined number of cylinders; a processor configured to receive the signal from the detector and generate one or more actuation signals; and a controller configured to receive the actuation signals and tandemly control the fuel delivery systems associated with the pre-determined cylinders based on the actuation signals. ### Claim 8 (depends on 7) The power system of claim 7, wherein the pre-determined cylinders is selected based on an operating parameter of the engine. ### Claim 9 (depends on 8) The power system of claim 8, wherein the operating parameter is one of load and speed of the engine. ### Claim 10 (depends on 7) The power system of claim 7, wherein the controller is configured to tandemly shut off a delivery of the compression ignited fuel from the fuel delivery systems associated with the pre-determined cylinders. ### Claim 11 (depends on 10) The power system of claim 10, wherein the controller is configured to selectively switch on a delivery of the spark ignited fuel from the fuel delivery systems associated with the pre-determined cylinders. ### Claim 12 (depends on 11) The power system of claim 11, wherein the controller is configured to switch on one or more ignition sources associated with the pre-determined cylinders. ### Claim 13 A method of changing a fuel type in a multi-cylinder engine, the method including: allowing delivery of a compression ignited fuel into cylinders of the multi-cylinder engine; pre-determining a number of cylinders; sensing a signal to change from the compression ignited fuel to a spark ignited fuel in the pre-determined cylinders; processing the signal to generate one or more actuation signals; and tandemly controlling the fuel delivery systems associated with the pre-determined cylinders based on the actuation signals. ### Claim 14 (depends on 13) The method of claim 13, wherein pre-determining the number of cylinders is based on an operating parameter of the multi-cylinder engine. ### Claim 15 (depends on 14) The method of claim 14, wherein the operating parameter is one of load and speed of the multi-cylinder engine. ### Claim 16 (depends on 13) The method of claim 13, wherein tandemly controlling the fuel delivery systems includes tandemly shutting off a delivery of the compression ignited fuel from the fuel delivery systems associated with the pre-determined cylinders. ### Claim 17 (depends on 16) The method of claim 16, wherein tandemly controlling the fuel delivery system includes selectively switching on a delivery of the spark ignited fuel from the fuel delivery systems associated with the pre-determined cylinders. ### Claim 18 (depends on 17) The method of claim 17 further including switching on one or more ignition sources associated with the pre-determined cylinders.