- The Yanmar engine was highly-customized from a production diesel engine for combustion research.
- The two-valve design facilitates modification of the cylinder head for additional instrumentation such as in-cylinder direct gas sampling, custom spark plug mounting/testing for assisted spark ignition, and a custom common-rail for dual fuel strategies.
- Customized pistons can be used for alternative fuel research (DME, Propane, Butane, gasoline).
- Research conducted on this engine includes
- application of novel spark ignition strategies
- air motion enhancement tests
- flame ion current measurement
- NOx generation mechanism study by dosing Nitrogen Oxide (NO) into the cylinder
- post-injection, supplimental fuel inejction, and EGR-catalytic reforming
- The in-cylinder direct gas sampling valve with Cambustion fast gas analyzers have been used together to perform detailed analysis of the combustion process in time-resolved or crank-angle resolved.
- Typical tested fuels on this engine include ethanol, gasoline, and dimethyl ether (DME).
Main Specifications of Yanmar SCRE
* Can be varied by switching piston.