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The purpose of a camshaft in an internal combustion engine is to?
Its purpose is to open the right valves at the right times.
What is air-standard cycle?
An air-standard cycle is a theoretical cycle used to analyze the performance of internal combustion engines. It assumes ideal conditions where air is the working fluid and the combustion process is ideal without any heat losses. This simplification helps in understanding the basic thermodynamic principles governing engine operation.
What is an open combustion chamber?
An open combustion chamber is a type of combustion chamber found in some internal combustion engines where the combustion area is not fully enclosed by the piston and cylinder head. This design allows for better airflow and mixing of air and fuel for combustion.
What is meant by the term internal combustion engine?
An internal combustion engine is where the pistons open up, gas goes in them and then they close. The pressure causes an explosive reaction from the gas. That reaction moves the piston up and down. The piston is connected to the transmission and drive train. The transmission is connected to the wheels and when the piston moves the transmission moves and so on. When the piston opens up again, the old gas leaves through the exhaust pipe and new gas goes into the piston repeating the cycle over and over again.
What is open and closed cycle gas turbine?
In an open cycle gas turbine, the gases that are produced by combustion go directly into the atmosphere, though the heat produced can sometimes be reclaimed. In a closed cycle gas turbine, the gases produced are reused and are not emitted into the atmosphere.
What is open cycle and closed cycle?
In an open cycle gas turbine, the gases that are produced by combustion go directly into the atmosphere, though the heat produced can sometimes be reclaimed. In a closed cycle gas turbine, the gases produced are reused and are not emitted into the atmosphere.
Valve operated mechanism for internal combustion engines?
The pistons drive the crankshaft which drives the camshaft which open and close the valves.
How do the cam profile influence the performance of internal combustion engine?
Cam lift and duration is how wide the cam opens the valve, and how long the valve stays open. The longer the valve is open, the more air\fuel mixture can get into the cylinder. More fuel means more power.
How do worn valves affect the operating engine?
Worn valves will not seal completely, will not open completely, or open as far as they should. This will cause incomplete combustion, backfire of exhaust gasses, release of compression, and escape of oil into the combustion chamber. Engine will lack power and smoke.
Why combustion of gasoline occurs more rapidly in an internal combustion engine than in open container?
There is a complicated physics/chemistry answer for this question and a "mechanic" answer. I will give the mechanics answer. I am assuming that you are asking this question in regards to a specific amount or volume of gasoline, because the obvious answer otherwise would be that the fuel is being pumped in the engine at a high rate and an open container is just....sitting there. With a specific amount of gasoline, in a container, the amount of gasoline that can be burned at a given time is in direct relation to the amount of surface liquid in contact with the air. In an internal combustion engine the fuel is mixed with air and atomized thereby creating more surface area to burn. Also the fuel air mixture is compressed, which causes heating and makes the mixture easier to ignite by a spark. Simply put, you cant burn something without air, and you can only burn a certain amount of something with a certain amount of air.David W.Career Mechanic
How many distinctive positions are there on a valve stem?
If your talking about an internal combustion, piston engine, there are 2 distinct positions. Open , and closed. However there are degrees of both , and durations of both, all decided by the shape of the cam. Which moves the valve up and down.
What describes the position of intake and exhaust valves during the most powerful stage in a four-cycle gas engine?
-intake: exhaust closed, intake open -compression: exhaust closed, intake closed -combustion: exhaust closed, intake closed -exhaust: exhaust open, intake closed
