A considerable amount of r & d work has been done for the wankel rotary engine application to automobiles, planes, etc. resulting in significant progress. the performance, reliability and durability that the wankel has demonstrated, however, falls short of the popular diesel engine. the adiabatic,… More

A feasibility study on the development of a stoichiometric diesel engine is proposed using the thermal ignition combustion chamber. the adiabatic diesel engine without water or air cooling allows the thermal ignition chamber to store heat during combustion and release the energy for ignition in the… More

Adiabatics, inc. is pleased to propose a research program to design an optimum piston for a high temperature military engine. adiabatics, inc. has been conducting a program for tacom titled "development of tribological systems and advanced high temperature in-cylinder components for advanced high… More

Adiabatics, inc. is pleased to propose a research program to develop a novel "compact, minimum noise, auxiliary power unit (apu) for lightweight vehicles." the apu uses a commercial diesel engine and an advanced generator and novel cooling techniques to meet the stated requirements. the key… More

A modified engine cycle based on the early intake valve closing of the Miller or the Adkinson cycle is proposed to meet the needs of the future Military Advanced Diesel Engine. The concpet involves the principle of short, effective compression with long expansion ratio to provide high brake thermal… More

Two major objectives of the U.S. Army is to increase power density and reduce heat rejection. Reducing airflow requirements of the deisel engine will contribute toward both of these objectives. Reducing air-fuel ratio requirements is one of the major cost effective approaches available for… More

The primary roadblock to the success of the high output Low Heat Rejection (LHR) diesel engine requiring little or no water cooling is the lack of effective liquid lubrication where target top ring reversal (TRR) temperatures between the cylinder liner and piston ring approach 1000 degrees F. … More

Not Available Three vibration reduction concepts are proposed to address current and future needs for more efficient vibration control techniques. More cost-effective solutions are required to enable active material technologies to benefit the performance of ballistic missile systems. Both active… More

Adiabatics, Inc. has been involved in the field of ceramic composite coatings and high temperature uncooled Low Heat Rejection (LHR) diesel engine development for the past 15 years. Recent developments in previous high temperature tribology study has shednew light on the possiblity of coming up… More

"In future advanced military diesel engine propulsion systems, the engine's tribological considerations have been limited by the temperature capability of the lubricating fluid. Thermal oxidation resulting in lubricant breakdown and formation of films anddeposits are typical causes of engine… More

"A small engine concept is being proposed for a 0.25 cid two-stroke commercially available engine that will allow the elimination of volatile fuel additives and lubricating oil. The concept will lead to fuel consumption improvements and increases in powerdensity in heavy-fueled small bore… More

"This proposal comprises research efforts to study a dynamic non-stationary friction regime with a variable range of external factors or parameters. This research method considers the development of special non-linear mathematical models for enginetribology including the lubricating oil film… More

This proposal comprises research efforts to study a dynamic non-stationary friction regime with a variable range of external factors or parameters. This research method considers the development of special non-linear mathematical models for enginetribology including the lubricating oil film… More

The Future Combat System (FCS) military diesel engine propulsion systems tribological considerations are predicted to be compromised primarily by the temperature capability of the lubricating fluid. Thermal oxidation resulting in lubricant work in rigidcondition breakdown and formation of deposits… More

The Future Combat System (FCS) military diesel engine propulsion systems tribological considerations are predicted to be compromised primarily by the temperature capability of the lubricating fluid. Thermal oxidation resulting in lubricant work in rigid condition breakdown and formation of deposits… More

The future generation of both military and commercial diesel engines will operate at significantly higher temperatures and pressures than today's engines. The future combat system diesel engine operating parameters demand significant design improvement of in cylinder insulation. Increased cylinder… More

A high-power density, low specific heat rejection diesel engine design for traditional and hybrid future combat system (FCS) vehicle configurations is being proposed. The total propulsion system of the vehicle hybrid configuration will fit the future vehicle assigned space/volume by TACOM's vehicle… More

The future generation of both military and commercial diesel engines will operate at significantly higher temperatures and pressures than today's engines. The future combat system diesel engine operating parameters demand significant design improvement of power cylinder insulation. Increased… More

A high-power density, Low Heat Rejection (LHR) diesel engine design for both traditional and hybrid Future Combat System (FCS) vehicle configurations is being proposed. Work under this proposal includes application of LHR engine technology to improve power density and life cycle durability of a… More

Viscosity and low temperature lubricant characteristics determine turbine engine starting capability, and lubricant motion with respect to the contact surfaces at low ambient temperature. Low ambient temperature influences the oil viscosity and also the variation of its curve shape versus the low… More

Viscosity and low temperature lubricant characteristics determine turbine engine starting capability, and lubricant motion with respect to the contact surfaces at low ambient temperature. Such low ambient temperatures influence the oil viscosity and also the variation of its curve shape versus the… More