Advances in ceramics spur adiabatic engine development

Journal Article · Mon Jul 01 04:00:00 EDT 1985 · Mech. Eng.; (United States)

OSTI ID:6219735

Advanced ceramics and other materials used to insulate the hot-gas-stream components in adiabatic engines are under development and are expected to achieve a high level of performance. The synthesis of new structural ceramics and ceramic coatings and the replacement of oil with solid lubricants that reduce frictional and parasitic losses are developments that are currently solving old engine problems. An advanced adiabatic diesel engine is described and is expected to achieve 78.8 mpg in the Federal combined driving cycle in a 3000-pound vehicle. The engine has insulated pistons, cylinder liners, cylinder head, intake and exhaust ports, exhaust manifolds and valves. There is no cooling system. To insulate the hot-gas-stream components, extensive use of ceramic coatings is necessary. To reduce frictional and parasitic losses, the engine does not use liquid lubricants. Instead, antifriction ceramic rollers are used. The charge-air system of the engine includes a high-efficiency, helical screw compressor and a ceramic expander. Major specifications for the engine are shown, as are performance comparisons with a conventional diesel engine.

• OSTI ID: 6219735
• Journal Information: Mech. Eng.; (United States), Journal Name: Mech. Eng.; (United States) Vol. 107:7; ISSN MEENA
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330102* -- Internal Combustion Engines-- Diesel
36 MATERIALS SCIENCE
360203 -- Ceramics
Cermets
& Refractories-- Mechanical Properties
ADIABATIC PROCESSES
CERAMICS
CHALCOGENIDES
CHROMIUM COMPOUNDS
CHROMIUM OXIDES
COMBUSTION CONTROL
CONTROL
DESIGN
DIESEL ENGINES
EFFICIENCY
ENGINES
FUEL ECONOMY
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
LUBRICANTS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PISTONS
RESEARCH PROGRAMS
SOLID LUBRICANTS
THERMAL CONDUCTIVITY
THERMAL EFFICIENCY
THERMAL INSULATION
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS