SAE Paper uses Hirth/Orbital Engine for Benchmarking Benchmarking a 2-Stroke Spark Ignition Heavy Fuel Engine
Date Published: 2012-04-16 Paper Number: 2012-01-0397 DOI: 10.4271/2012-01-0397
Citation:
La, C., Murphy, P., and Cakebread, S., "Benchmarking a 2-Stroke Spark Ignition Heavy Fuel Engine," SAE Technical Paper 2012-01-0397, 2012, doi:10.4271/2012-01-0397.
Author(s):
Chi La - Ricardo Inc. Patrick Murphy - Ricardo Inc. Stephen Cakebread - Ricardo Inc.
Abstract:
Heavy fuel engines have typically been limited to large, heavy compression ignition engines. However, with the push by the US military to use a common fuel (JP5/JP8/diesel) there is a need to develop small, lightweight, high performance engines that are also capable of operating on heavy fuel. Recent advancements in air assisted direct injection technologies have improved fuel atomization to the level necessary to overcome the poor physical properties of heavy fuel. This has permitted the operation of small two-stroke engines which retain the advantage of a lightweight design with high power output. This paper discusses the process of benchmarking a two-stroke heavy fuel spark ignited engine with an integrated air-assist direct injection system. The setup and commissioning phases of the testing are outlined, including specific techniques for quantifying scavenging, burn rate, and heat release characteristics with the objective of validating a 1-D performance simulation model. Additionally, design features and performance attributes of the engine and the air assisted direct injection system are discussed.
File Size: 3756K
Product Status: In Stock See papers presented at SAE 2012 World Congress & Exhibition, April 2012, Detroit, MI, USA, Session: Direct Injection SI Engine Technology (Part 2 of 2)
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