Mechanical Engineering - IC Engines and Nuclear Power Plants - Discussion
Discussion Forum : IC Engines and Nuclear Power Plants - Section 1 (Q.No. 31)
31.
A diesel engine has
Discussion:
47 comments Page 1 of 5.
AMAL said:
10 years ago
I think FI cannot be termed as valve because diesel engine has multi point injection system for fine atomization in order to get nearly homogeneous mixture inside cylinder. This can be done through very small ports and also through number of ports at different locations. So, diesel engines have two valves.
Any modifications are welcomed.
Any modifications are welcomed.
Sanjay said:
1 decade ago
A valve is a device that regulates, directs or controls the flow of a fluid (gases, liquids, fluidized solids, or slurries) by opening, closing, or partially obstructing various passageways.
According to this, In diesel Engine three Valves are one for Intake Air, 2nd for Exhaust gas and 3rd is for Fuel (Injector).
According to this, In diesel Engine three Valves are one for Intake Air, 2nd for Exhaust gas and 3rd is for Fuel (Injector).
V.Anandhakumar said:
1 decade ago
2, 4 not wrong the answers.
We can not say three valves only different diesel engine have 2, 3, 4 valves because all are there.
Any objection in my report please give clarifications to me.
If we use word most of the engine the answer is correct.
We can not say three valves only different diesel engine have 2, 3, 4 valves because all are there.
Any objection in my report please give clarifications to me.
If we use word most of the engine the answer is correct.
Surya said:
7 years ago
A multi-valve engine design typically has three, four, or five valves per cylinder to achieve improved performance only. But any four-stroke internal combustion engine needs at least two valves per cylinder. Fuel injector is consider as a port.
Anket said:
8 years ago
Valve arrangement merely depends on no of cylinders, Each cylinder can use two valves (one exhaust one intake) or Each cylinder can use four valves (2 intake and 2 exhaust).
Three valves can also be used as per requirement of the vehicle.
Three valves can also be used as per requirement of the vehicle.
RAJA MUTHU KUMAR said:
4 years ago
In a Diesel Injector, there is a needle valve to expel the Diesel fuel in the combustion chamber. Taking into account the needle valve, the diesel engine has three valves.
1 - Inlet valve
2 - Exhaust valve
And 3. Injector.
1 - Inlet valve
2 - Exhaust valve
And 3. Injector.
(5)
Dheeraj said:
1 decade ago
Fuel injector doesn't have a valve it is actuated by the camshaft but doesn't have valve.
It is not necessary that diesel engine has only 3 valves.
I have studied BMW, cummins and Leyland engine and found 4 valves there.
It is not necessary that diesel engine has only 3 valves.
I have studied BMW, cummins and Leyland engine and found 4 valves there.
Ani said:
9 years ago
Diesel engine has valve ranging from 2-8. And valves are used only for intake and exhaust purpose.
Even no of valves have equal no of intake and exhaust valve. And in odd no exhaust valve is one less then intake valve.
Even no of valves have equal no of intake and exhaust valve. And in odd no exhaust valve is one less then intake valve.
Afridi Ansari said:
4 years ago
Injection port can be considered as valve because Valve is a thing that controls the amount of flow by either stopping the way or opening the way.
I think this is the answer. Correct me if I am wrong.
I think this is the answer. Correct me if I am wrong.
(2)
Ankush said:
8 years ago
Choice of valve totally depends on engine design requirement. It can be two for basic study purpose and can be four in practical cases. There is no law governing three valve system in a diesel engine.
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