SOUTHWEST RESEARCH INSTITUTE

Capabilities

Facilities

Internal Research

Project Briefs

Spark Ignition Engine Brochures

Other Brochures

Related Information

Publications

Contact Us

SwRI Information

Home

	The boat pictured is a similar craft to the actual vessel used during lake testing.

Reference: 03- 3329

Client: Commercial Confidential

Duration: Six Months

Southwest Research Institute (SwRI) performed an evaluation for a manufacturer of pleasure boat engines and drives. The purpose of the project was to compare this manufacturer's products with those of a competitor. SwRI was selected to perform this work to obtain a nonbiased evaluation with a higher degree of data accuracy than any previously reported results. Engines were subjected to a short break-in and examined for compliance to manufacturer’s tune up specifications. Power and fuel consumption curves were then generated from data acquired in a dynamometer test cell.

Following the engine dyno tests, engines and drives were tested sequentially in a 23-foot cabin cruiser on a lake in south Texas. Various acceleration, time to plane, fuel consumption, noise, and vibration tests were performed. None of the three engines tested produced full manufacturer’s advertised rated power although one came much closer than the other two. Various differences in acceleration, time to plane, and steady-state fuel consumption were documented with the seven combinations of engines, drives, and propellers tested.

Please browse this web site to see the full capabilities and experience of SwRI and the Engine, Emissions & Vehicle Research Division. Then give us an opportunity to become an extension of your engineering department.

For a more comprehensive review of our marine engine & drive comparison capabilities, or information on how you can contract with SwRI, please contact Terry Alger at talger@swri.org or (210) 522-5505.

siengines.swri.org

| Engine and Vehicle R&D Department | Engine, Emissions & Vehicle Research Division | SwRI Home |

Southwest Research Institute^® (SwRI^®), headquartered in San Antonio, Texas, is a multidisciplinary, independent, nonprofit, applied engineering and physical sciences research and development organization with 11 technical divisions.

December 28, 2012