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The More-Complete-Expansion Cycle Applied to Irrigation Engines
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English
Abstract
Agricultural irrigation pumps are frequently powered by common automobile or tractor spark-ignition (SI) engines burning natural gas. Typically, these engines operate at part-throttle and at constant speed and load. Investigated was the fuel consumption reduction that occurs with application of the more-complete-expansion cycle. Using a Chevrolet 5.74 liter (350 cubic inch) displacement engine for calculation purposes, fuel consumption rates are predicted as 12 to 16% less than a conventional engine (reference case). Economic analysis reveals that with irrigation pumps operating from 1000 to 2000 hr/year, the cost of modification is recovered by fuel savings (SO.97 per kg of natural gas) in one to two years.
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Citation
Eakin, G., Fenton, D., and Schrock, M., "The More-Complete-Expansion Cycle Applied to Irrigation Engines," SAE Technical Paper 881328, 1988, https://doi.org/10.4271/881328.Also In
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