Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
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.
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.
CLASSIFIC A TION : The steam turbines can be classified as follows: 1 . In accordance to method of steam expansion: (a) Impulse (b) Reaction. 2 . In
For Elevated Temperatures, Other Materials High temperature creep is a significant phenomenon to be guarded in various machines like gas turbines, missiles, reentry vehicles a
An inside cylinder locomotive has its cylinder centre lines 0.70 m apart and has a stroke of 0.60 m. The rotating mass per cylinder is similar to 150 Kg. and the reciprocating mass
a compound cylinder is composed of a tube of 250mm internal diameter at 25mm wall thickness.it is shrunk on to a tube of 200mm internal diameter. the radial pressure at the junctio
How would you say environmental studies are multidisciplinary nature?
Find out stress - strain and elongation of bar: A circular rod having diameter 20 m and 500 m long is subjected to the tensile force of 45kN. The modulus of elasticity for st
Q. Describe the Types of Gas Welding? Gas welding involves the use of a gas-fed flame torch to heat the metal work piece and the filler material to create a weld. The gas is
finishing operation of telephone outer body after injection molding
Compression Ratio (r): It is the ratio of the total cylinder volume when the piston is at the bottom dead centre, V t to the clearance volume, V C . R= v t /v c
Select a standard rolled steel I-section for the simply supported beam shown in figure below. Select an appropriate factor of safety and material strength. Include references for
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd