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US 9,810,191 B2Granted
Engine for vehicle using alternative fuels
AssigneeSem AB
InventorsJörgen Bengtsson, Lars-Åke Andersson, Bert Gustafsson
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Abstract
This invention relates to an engine for a vehicle using alternative fuel, preferably gas, comprising an engine (5) having a spark ignited ignition system (2) wherein said ignition system (2) includes misfire detection by means of a sensor device (4) providing information to a control system (20), connected to or within said ignition system (2), and wherein said combustion includes diluted operation to optimize emissions wherein said sensor device (4) includes an ion sensing measurement means (40) arranged to measure an ion current in said engine (5) and that said ignition system (2) has a built-in function to detect misfiring through an analysis of the ion current of the engine (5) during combustion.
Claims13
A combustion engine comprising:
- a sensor device including an ion sensing measurement device configured to provide measurements of an ion current in said combustion engine during combustion;
- a spark generating system for causing spark events to generate the ion current in said combustion engine during combustion, wherein the spark generating system is configured to provide information about discharge current during each spark event;
- an engine management system, including an ignition control system that receives the measurements of the ion current in said combustion engine during combustion from the sensor device, and that receives the information about the discharge current during each spark event from the spark generating system,
- wherein the ignition control system is configured to detect misfiring through a combined analysis comprising an analysis of the measurements of the ion current in said combustion engine during combustion received from the sensor device, the combined analysis further comprising an analysis of the information about the discharge current during each spark event received from the spark generating system, wherein the engine management system is configured to control an operating parameter of the spark generating system comprising at least one of discharge current, spark-over voltage, and primary current/voltage, subsequent to each spark event based upon the combined analysis, and
- wherein the engine management system is configured to control diluted operation of the combustion engine, wherein the diluted operation provides for peak values of at least 10% of diluted gas.
2 more elements
The combustion engine according to 1, wherein the spark generating system is configured to provide information about discharge current, spark-over voltage, and primary current/voltage during the spark events;
- wherein the ignition control system receives the information about the discharge current, the spark-over voltage, and the primary current/voltage during the spark events from the spark generating system;
- and wherein the ignition control system is configured to detect misfiring through an analysis of the information about the discharge current, the spark-over voltage, and the primary current/voltage during the spark events received from the spark generating system.
A combustion engine comprising:
- a sensor device including an ion sensing measurement device configured to provide measurements of an ion current in said combustion engine during combustion;
- a spark generating system for causing spark events to generate the ion current in said combustion engine during combustion, wherein the spark generating system is configured to provide information about an operating parameter during each spark event, wherein the operating parameter comprises at least one of discharge current, spark-over voltage, and primary current/voltage;
- an engine management system, including an ignition control system that receives the measurements of the ion current in said combustion engine during combustion from the sensor device, and that receives the information about the operating parameter during each spark event from the spark generating system, wherein the engine management system is configured to control diluted operation of the combustion engine providing for peak values of at least 10% of diluted gas,
- wherein the ignition control system is configured to detect misfiring through a combined analysis comprising an analysis of the measurements of the ion current in said combustion engine during combustion received from the sensor device, the combined analysis further comprising an analysis of the information about the operating parameter during each spark event received from the spark generating system, wherein the engine management system is configured to control operation of the spark generating system and the peak values of diluted gas subsequent to each spark event based upon the combined analysis.
1 more element
A combustion engine comprising:
- a sensor device including an ion sensing measurement device configured to provide measurements of an ion current in said combustion engine during combustion;
- a spark generating system for causing spark events to generate the ion current in said combustion engine during combustion, wherein the spark generating system is configured to provide information about discharge current during each spark event;
- an engine management system, including an ignition control system that receives the measurements of the ion current in said combustion engine during combustion from the sensor device, and that receives the information about the discharge current during each spark event from the spark generating system,
- wherein the ignition control system is configured to detect misfiring through a combined analysis comprising an analysis of the measurements of the ion current in said combustion engine during combustion received from the sensor device, the combined analysis further comprising an analysis of the information about the discharge current during each spark event received from the spark generating system, wherein the engine management system is configured to control an operating parameter of the spark generating system comprising at least one of discharge current, spark-over voltage, and primary current/voltage, subsequent to each spark event based upon the combined analysis,
- wherein the engine management system is configured to control diluted operation of the combustion engine, wherein the diluted operation provides for peak values of at least 15% of diluted gas.
2 more elements
Dependencies are inferred from the claim text.