Microwave plasma ignition has the potential for energy savings and emission reductions, minimum (MIE) lean limit can be determined by microwave spark plugs (MSPs) under same power. To predict relationship among electric field intensity (EFI), equivalence ratio (φ) MIE, a physical model of is established. The calculation results show that MIE U-shaped with φ, value methane-air at point φ = 0.7. ...

The engine manufacturer has aimed to attain optimum values for engines operating different loads and speeds by utilizing the characteristics of both spark-ignition having a ready combustion control compression ignition resulting in low emissions, fuel consumption and, high output power years. In this regard, efforts on improvement performance, thermal efficiency have been constantly continuing ...

Engine knock is an undesired phenomenon in spark ignited internal combustion engines; such as a gasoline engine running the Otto cycle. Knocking originates from abnormal combustions at timings other than those decided by controlled ignition. Individual abnormal combustions of this type is also referred to as auto-ignition. Knocking is not only a limitation on engine efficiency and thus of envir...

This thesis addresses the problem of combustion control for automotive engines. A method is proposed to complement existing controllers, which use lookup tables based on steady-state operation. During transients, the new control method adjusts fast control variables (ignition or injection time) to compensate for deviations in the cylinder initial conditions from their optimal values due to the ...

This thesis addresses the problem of combustion control for automotive engines. A method is proposed to complement existing controllers, which use lookup tables based on steady-state operation. During transients, the new control method adjusts fast control variables (ignition or injection time) to compensate for deviations in the cylinder initial conditions from their optimal values due to the ...

A theory of the Hindenburg fire that has gained popular acceptance proposes that an incendiary paint covered the outer surface of the airship. Further, according to this theory, the paint was both the point of ignition and the sole cause of the rapid spread of the fire. The hydrogen within the airship is held blameless for both the start of the fire and its subsequent advance. We have examined ...

This paper presents a model of an electric variable valve timing (EVVT) system and its closed-loop control design with experimental validation. The studied EVVT uses a planetary gear system to control the engine cam timing. The main motivation of utilizing the EVVT system is its fast response time and the accurate timing control capability. This is critical for the combustion mode transition co...

Neural network architectures are proposed to model and control the Spark-Ignition (SI) engine idle speed. Static and dynamic multi-layer neural networks are used to develop plant models and plant inverse function models. A neural network is trained to learn the system’s input-output relationship. Another is trained to model the inverse relationship of the plant and is included in the controller...