Diesel cycle

See also Automobile Performance Carmot, Nicolas Leonard Sadi Diesel Cycle Engines Diesel Fuel Engines Gasoline Engines. 

Sequence of individual piston and valve events tor a tour-stroke diesel cycle engine. 

Pressure-volume curve illustration for a turbocharged and direct-injected high-speed heavy-duty four-stroke diesel cycle engine. 

Two-stroke diesel cycle engine principle of operation. 

See also Automobile Performance Combustion Diesel, Rudolph Diesel Cycle Engines Engines Eucl Cell Vehicles Gasoline and Additives Gasoline Engines Government Agencies Hybrid Vehicles Kerosene Synthetic Fuel. 

See also Aircraft Combustion Diesel Cycle Engines Gasoline Engines Spacecraft Energy Systems Steam Engines Stirling Engines Thermodynamics Turbines, Gas Turbines, Steam. 

See also Aerodynamics Diesel Cycle Engines Diesel Fuel Engines Environmental Problems and Energy Use Nuclear Fission Fuel Thermodynamics Transportation, Evolution of Energy Use and Turbines, Gas Turbines, Steam Waves. 

See also Cogneration Technolgies Diesel Cycle Engines Gasoline Engines Steam Engines Stiring, Robert. 

Vancouver Community College, Vancouver, Canada Diesel Cycle Engines Diesel Fuel... 

Compression-ignition, or diesel cycle engine, which is fueled by a diesel oil and air mixture. 

Apart from the hydrolysis step, the SCR-urea process is equivalent to that of stationary sources, and in fact the key idea behind the development of SCR-urea for diesel powered cars was the necessity to have a catalyst (1) active in the presence of 02, (2) active at very high space velocities ( 500.000 per hour based on the washcoat of a monolith) and low reaction temperatures (the temperature of the emissions in the typical diesel cycles used in testing are in the range of 120-200°C for over half of the time of the testing cycle), and (3) resistant to sulphur and phosphorus deactivation. V-Ti02-based catalysts for SCR-NH3 have these characteristics and for this reason their applications have also been developed for mobile sources. 

The Diesel cycle was proposed by Rudolf Diesel in the 1890s. The Diesel cycle as shown in Fig. 3.8 is somewhat similar to the Otto cycle, except that ignition of the fuel-air mixture is caused by spontaneous combustion owing to the high temperature that results from compressing the mixture to a very high pressure. The basic components of the Diesel cycle are the same as those of the Otto cycle, except that the spark plug is replaced by a... 

The Diesel cycle consists of the following four processes ... 

Since the duration of the heat-addition process is extended, this process is modeled by a constant-pressure process. The p-v and Ts diagrams for the Diesel cycle are illustrated in Fig. 3.9. 

A comparison of the thermal efficiency of the Diesel cycle with that of the Otto cycle shows that the two thermal cycle efficiencies differ by the quantity in the brackets of Eq. (3.23). This bracket factor is always larger than one, hence the Diesel cycle efficiency is always less than the Otto cycle efficiency operating at the same compression ratio. 

Figure 3.14 Diesel cycle with supercharging and precooling.

Find the pressure and temperature of each state of an ideal Diesel cycle with a compression ratio of 15 and a cut-off ratio of 2. The cylinder volume before compression is 0.16 ft. The atmosphere conditions are 14.7 psia and 70°F. Also determine the mass of air in the cylinder, heat supplied, net work produced, MEP, and cycle efficiency. 

Figure 3.15 Diesel cycle without precooler and without turbocharger.

Figure 3.17 Diesel cycle with precooler and turbocharger.

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