° F) and 350 В° C (662 В° F) at atmospheric pressure, resulting in a mixture of carbon chains that typically contain between 8 and 21 carbon atoms per molecule.
Petroleum diesel
Petroleum diesel, also called petrodiesel, or fossil diesel is produced from the fractional distillation of crude oil between 200 В° C (392 В° F) and 350 В° C (662 В° F) at atmospheric pressure, resulting in a mixture of carbon chains that typically contain between 8 and 21 carbon atoms per molecule.
Diesel engine
Diesel engines have long been the workhorse of industry. Favored for their high torque output, durability, exceptional fuel economyand ability to provide power under a wide range of conditions, diesels are the dominant engines used in applications such as trucking, construction, farming, and mining. They are also extensively used for stationary power generation and marine propulsion and in passenger vehicles in many regions of the world.engines are not used widely in light-duty vehicles in the United States primarily because they do not meet U. S. emissions standards. However, because of significant improvements in diesel engine performance, injection technology, and exhaust aftertreatment devices, particulate matter and nitrogen oxides emissions have been reduced such that diesels are poised to achieve future emissions standards.engines are similar to gasoline engines in many ways. Both are internal combustion engines and most versions of them use a four-stroke cycle. There are four fundamental differences: conventional gasoline engine injects fuel into the air as it is drawn into a cylinder. The diesel engine draws air into a cylinder and injects fuel after the air has been compressed. For a discussion about the Direct Injection Spark Ignition engine, please see the companion publication Motor Gasoline Technical Review.gasoline engine ignites the fuel-air mixture with a spark. The diesel engine relies on high temperature alone for ignition. Diesel engines are often referred to as compressionignition engines because this high temperature is the result of compressing air above the piston as it travels upward.power output of a gasoline engine is controlled by a throttle, which varies the amount of fuel-air mixture drawn into a cylinder. A diesel engine does not throttle the intake air. It controls the power output by varying the amount of fuel injected into the air, thereby, varying the fuel-air ratio. This is one of the primary reasons that diesel engines are more fuel efficient than spark-ignition gasoline engines.conventional gasoline engine runs stoichiometrically - the fuel-air ratio is fixed so that there is just enough air to burn all the fuel. A diesel engine runs lean - there is always more air than is needed to burn the fuel. The main advantage of a diesel engine is its high ther...
