Author: Arun S. P. SolomonPublisher:
ISBN:
Category : Spark ignition engines
Languages : en
Pages : 17
Book Description
A Photographic Study of Fuel Spray Ignition in a Rapid Compression Machine
Author: Arun S. P. SolomonPublisher:
ISBN:
Category : Spark ignition engines
Languages : en
Pages : 17
Book Description
Fuel Ignition in a Rapid Compression Machine
Author: W. W. HaskellPublisher:
ISBN:
Category : Combustion
Languages : en
Pages : 5
Book Description
Ignition Delay Study of Next Generation Alternative Jet Fuels in a Rapid Compression Machine
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Gasoline Surrogate Modeling of Gasoline Ignition in a Rapid Compression Machine and Comparison to Experiments
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 14
Book Description
The use of gasoline in homogeneous charge compression ignition engines (HCCI) and in duel fuel diesel - gasoline engines, has increased the need to understand its compression ignition processes under engine-like conditions. These processes need to be studied under well-controlled conditions in order to quantify low temperature heat release and to provide fundamental validation data for chemical kinetic models. With this in mind, an experimental campaign has been undertaken in a rapid compression machine (RCM) to measure the ignition of gasoline mixtures over a wide range of compression temperatures and for different compression pressures. By measuring the pressure history during ignition, information on the first stage ignition (when observed) and second stage ignition are captured along with information on the phasing of the heat release. Heat release processes during ignition are important because gasoline is known to exhibit low temperature heat release, intermediate temperature heat release and high temperature heat release. In an HCCI engine, the occurrence of low-temperature and intermediate-temperature heat release can be exploited to obtain higher load operation and has become a topic of much interest for engine researchers. Consequently, it is important to understand these processes under well-controlled conditions. A four-component gasoline surrogate model (including n-heptane, iso-octane, toluene, and 2-pentene) has been developed to simulate real gasolines. An appropriate surrogate mixture of the four components has been developed to simulate the specific gasoline used in the RCM experiments. This chemical kinetic surrogate model was then used to simulate the RCM experimental results for real gasoline. The experimental and modeling results covered ultra-lean to stoichiometric mixtures, compressed temperatures of 640-950 K, and compression pressures of 20 and 40 bar. The agreement between the experiments and model is encouraging in terms of first-stage (when observed) and second-stage ignition delay times and of heat release rate. The experimental and computational results are used to gain insight into low and intermediate temperature processes during gasoline ignition.
Study of Compression Ignition of Fuel Sprays in a Controlled Environment
Author: Dale Charles BrinkmannPublisher:
ISBN:
Category :
Languages : en
Pages : 298
Book Description
Use of Spark Ignition of a Central Fuel Cloud to Allow Diesel Operation with Low Cetane Fuels
Author: David Robert StevensonPublisher:
ISBN:
Category :
Languages : en
Pages : 226
Book Description
Rapid Compression Machine Measurements of Ignition Delays for Primary Reference Fuels
Author: Pyongwan ParkPublisher:
ISBN:
Category : Automobiles
Languages : en
Pages : 276
Book Description
Two-stroke Direct Injection Emissions and Efficiency
Author: Marc L. SyvertsenPublisher:
ISBN:
Category :
Languages : en
Pages : 222
Book Description
Design, Construction and Testing of an Engine-fed Spray Chamber with Optical Access
Author: John Michael FeiereisenPublisher:
ISBN:
Category :
Languages : en
Pages : 270
Book Description
Kinetic Modeling of Hydrocarbon Autoignition at Low and Intermediate Temperatures in a Rapid Compression Machine
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
A computer model is used to examine oxidation of hydrocarbon fuels in a rapid compression machine. For one of the fuels studied, n-heptane, significant fuel consumption is computed to take place during the compression stroke under some operating conditions, while for the less reactive n-pentane, no appreciable fuel consumption occurs until after the end of compression. The third fuel studied, a 60 PRF mixture of iso-octane and n-heptane, exhibits behavior that is intermediate between that of n-heptane and n-pentane. The model results indicate that computational studies of rapid compression machine ignition must consider fuel reaction during compression in order to achieve satisfactory agreement between computed and experimental results.
