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Development of advanced high temperature in-cylinder components and tribological systems for low heat rejection diesel engines, phase 1Analysis and concept design work completed in Phase 1 have identified a low heat rejection engine configuration with the potential to meet the Heavy Duty Transport Technology program specific fuel consumption goal of 152 g/kW-hr. The proposed engine configuration incorporates low heat rejection, in-cylinder components designed for operation at 24 MPa peak cylinder pressure. Water cooling is eliminated by selective oil cooling of the components. A high temperature lubricant will be required due to increased in-cylinder operating temperatures. A two-stage turbocharger air system with intercooling and aftercooling was selected to meet engine boost and BMEP requirements. A turbocompound turbine stage is incorporated for exhaust energy recovery. The concept engine cost was estimated to be 43 percent higher compared to a Caterpillar 3176 engine. The higher initial engine cost is predicted to be offset by reduced operating costs due the lower fuel consumption.
Document ID
19940023481
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Kroeger, C. A.
(Caterpillar Tractor Co. Peoria, IL, United States)
Larson, H. J.
(Caterpillar Tractor Co. Peoria, IL, United States)
Date Acquired
September 6, 2013
Publication Date
March 1, 1992
Subject Category
Mechanical Engineering
Report/Patent Number
NAS 1.26:187158
NASA-CR-187158
DOE/NASA/0374-1
Accession Number
94N27984
Funding Number(s)
CONTRACT_GRANT: DE-A101-91CE-50306
CONTRACT_GRANT: DEN3-374
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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