Stoichiometric Diesel Engine

Period of Performance: 01/01/1989 - 12/31/1989

$493K

Phase 2 SBIR

Recipient Firm

Adiabatics, Inc.
3385 Commerce Drive
Columbus, IN 47201
Principal Investigator

Abstract

A CONCEPT DEMONSTRATION OF A STOICHIOMETRIC DIESEL ENGINE IS PROPOSED USING THE CONCEPTS FOR STOICHIOMETRIC COMBUSTION INVESTIGATED IN THE PHASE I EFFORT. THE CONCLUSION DRAWN FROM PHASE I IS THAT THE STOICHIOMETRIC DIESEL ENGINE HAS SIGNIFICANT SIZE AND WEIGHT ADVANTAGES OVER CONVENTIONAL DIESEL ENGINES AND IS PRACTICAL TO IMPLEMENT UTILIZING TODAY'S STATE-OF-THE-ART INSULATED DIESEL ENGINE COMPONENT TECHNOLOGY. A PHASE II PROJECT IS PROPOSED CONSISTING OF SIX TASKS TO SELECT AN APPROACH AND A TEST ENGINE FOLLOWED BY DESIGN AND PROCUREMENT AND COMPLETED WITH THE RUNNING OF ENGINE TESTS. CONVENTIONAL DIESEL ENGINES OPERATE WITH A LARGE AMOUNT OF EXCESS AIR AS COMPARED WITH GASOLINE ENGINES WHICH OPERATE WITH NO EXCESS AIR (STOICHIOMETRIC) AND THEREFORE GASOLINE ENGINES DELIVER ABOUT TWICE AS MUCH POWER AS THE DIESEL ENGINE. THE ANALYSIS CONDUCTED IN PHASE I SHOWED THAT THE USE OF AN INSULATED HIGH TEMPERATURE PRECOMBUSTION CHAMBER SPEEDS UP THE MIXING AND PREPARATION OF THE FUEL AIR MIXTURE SUFFICIENTLY THAT IT COMBUSTS LIKE A PRE-MIXED HOMOGENEOUS CHARGE. ENGINE PERFORMANCE DATA INCLUDING POWER OUTPUT, FUEL CONSUMPTION AND EMISSIONS WILL BE GATHERED BY RUNNING A STOICHIOMETRIC DIESEL ENGINE.