Fault tolerant control system for linear combustion engine | IEEE Conference Publication | IEEE Xplore

Fault tolerant control system for linear combustion engine


Abstract:

This paper presents a fault tolerant control system for a linear combustion engine (LCE). A three-level control system has been proposed and developed for the LCE control...Show More

Abstract:

This paper presents a fault tolerant control system for a linear combustion engine (LCE). A three-level control system has been proposed and developed for the LCE control. The system consists of four control sub-systems that are spread out into particular levels as a function of their sample time. The low level of the LCE control system is represented by movement control. It determines requested contribution of the force supplied by the linear motor-generator to achieve the requested compression ratio for a given fuel quantity and spark position. The middle level consists of fuel and spark position control. The spark position control minimizes differences between desired and achieved compression ratio for each stroke of the engine cycle. The fuel control then follows spark advance demand by the setting of appropriate fuel rate. Finally, the top level is represented by a throttle control. The throttle control handles amount of inducted air into the cylinders to achieve the requested air/fuel ratio. The proposed control system is able to govern the LCE in all its feasible operating range and is capable to explore its benefits.
Date of Conference: 10-13 November 2008
Date Added to IEEE Xplore: 23 January 2009
ISBN Information:
Print ISSN: 1553-572X
Conference Location: Orlando, FL, USA

I. Introduction

THE linear combustion engine (LCE) presented in this paper is a modification of the internal combustion engine, which can used as a electric power unit in the series configuration of the hybrid vehicle [1]. A functional schematic of the LCE is shown in Figure 1. The LCE is the connection of two opposed pistons with a piston-rod, which is a common part of combustion engines, and a linear motor-generator. Both pistons work in the same conditions as those in a conventional combustion engine. Schematic of the linear combustion engine.

References

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