Four stroke engine - thermodynamics, Mechanical Engineering

Four Stroke Engine - thermodynamics:

Figure given below shows the working of a four stroke engine. During suction stroke only air (in case of diesel engine) or air with petrol (in case of petrol engine) is drawn into the cylinder by the moving piston.

1503_Four Stroke Engine.png

The charge enters the engine cylinder through the inlet valve that is open. During this stroke, the exhaust valve is closed. At the time of the compression stroke, charge is compressed in clearance space. On the finishing point of compression, if only air is taken in during the suction stroke, fuel is injected into engine cylinders at the end of compression. The mixture is then ignited and the heat is generated, while piston is stationary, sets up high pressure. During the power stroke, piston is forced downward by high pressure. This is the important stroke of the cycle. At the time of the exhaust stroke the products of combustion are swept out through open exhaust valve while piston returns. It is scavenging stroke. The burnt gases are entirely removed from the engine cylinder and cylinder is ready to receive fresh charge for the new cycle.

Therefore, in four-stroke engine there is one power stroke and 3 idle strokes. The power stroke supplies the required momentum to keep the engine running.

Posted Date: 10/15/2012 4:27:48 AM | Location : United States







Related Discussions:- Four stroke engine - thermodynamics, Assignment Help, Ask Question on Four stroke engine - thermodynamics, Get Answer, Expert's Help, Four stroke engine - thermodynamics Discussions

Write discussion on Four stroke engine - thermodynamics
Your posts are moderated
Related Questions
Wall-type bunds / dikes for storage compounds should be from 0.5 m to 1.5 m high (1.5 ft. - 5 ft. - check local codes and regulations), depending on the required containment capaci

Evaluation Phase of Radial drilling machine Steps: 1. To judge the ideas generated in the creation phase for ability to meet the required criteria. 2. To refine, develop

Q. What is the basic working of Cooling Tower? Cooling towers are generally located downwind from process units to adequately disperse vapors (from exchanger leaks) and minimiz

(Buoyancy of a floating body) Ice has a density 91.7% of liquid water. For an ice cube (1 cm per side), a) what fraction of the volume floats above the water surface at sta

Define Cam - Application of Computers in Manufacturing CAM can be simply defied as "the application of computers in manufacturing." Most elaborately, CAM refers to the use

Motion of this particle: A particle of mass m is resting on a smooth horizontal plane as illustrated in Figure (a). It is associated to a spring which has a constant of k in f

(a) Show energy method and Rayleigh's method for single degree of freedom system. Also discuss its application. (b) A sphere of diameter D floats half submerged in water. If the

If Fuel Consumption is High Causes of Problem Remedy   Incorrect electrode gap of spark plug Worn out electrodes o

Alternating Current ( AC ) : The electricity whose direction changes at regular interval is known as alternating current. I

1. Produce the SW parts for the lugs, connector and tubes. Produce an assembly to FIT at the designated points. 2. Create your own, individual, blank, customised drawing te