Combustion Characteristics of Various Octane Rating Fuels for Automotive Thermal Engines Efficiency Requirements

Automotive fuels and internal combustion engines: a chemical perspective.

Commercial transportation fuels are complex mixtures containing hundreds or thousands of chemical components, whose composition has evolved considerably during the past 100 years. In conjunction with concurrent engine advancements, automotive fuel composition has been fine-tuned to balance efficiency and power demands while minimizing emissions. Pollutant emissions from internal combustion engi...

Reformer Gas Application in Combustion Onset Control of HCCI Engine

Homogenous charge compression ignition (HCCI) combustion is spontaneous multi-site combustion of a nominally premixed air/fuel mixture that exhibits high rate of pressure rise and short combustion duration. To avoid excessive pressure rise rate and knocking, HCCI engines are fueled with highly diluted mixture using a combination of excess air and/or EGR. HCCI combustion is attractive due to ...

Combustion and Emissions Characteristics of Biodiesel Fuels

Limits of Internal Combustion Engines Efficiency

List of old and new concepts of ICE thermodynamic improvements considering realistic limits of both mechanical and thermal stress and pollutant emissions, especially new concepts of combustion (HCCI-like), piston motion control, consequences of downsizing, possibilities of waste heat recovery and heat regeneration. Methods of simulation for conceptual optimization in hierarchy of procedures. Im...

Effective Octane and Efficiency Advantages of Direct Injection Alcohol Engines

Ethanol is receiving great interest as an alternative fuel. Methanol is another alcohol fuel that could serve as a replacement for gasoline. Although it is currently receiving much less attention, it has the potential to play an important role. Like ethanol, methanol also has the advantage of being a liquid fuel and it can be produced from gasification of a variety of feedstocks using well esta...