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The Variable Stroke Engine - Problems and Promises
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Sector:
Event:
National West Coast Meeting
Language:
English
Abstract
The concept of the variable stroke engine (VSE) is explained and the problems related to its use are discussed. Single cylinder combustion data are combined with published multi-cylinder VSE friction data to formulate engine model. This engine model is coupled with a vehicle model to make projections of 55/45 fuel economy and NOx g/mile which are compared with similar projections for a throttled engine. At an NOx level of 0.93 g/km (1.5 g/mile), VSE fuel economy improvements ranged from 2 to 20%, depending upon the frictional losses and vehicle power-to-weight ratio used in the models.
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Authors
Citation
Siegla, D. and Siewert, R., "The Variable Stroke Engine - Problems and Promises," SAE Technical Paper 780700, 1978, https://doi.org/10.4271/780700.Also In
References
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