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In four-stroke engine the time period when both valves slightly open?
overlap
What is the term for the time when both the intakek and the exhaust vavles are open at the same time?
The term for the time when both the intake and exhaust valves are open simultaneously is called "valve overlap." This occurs during the end of the exhaust stroke and the beginning of the intake stroke in a four-stroke engine cycle. Valve overlap can enhance engine efficiency by allowing better exhaust scavenging and improved intake charge filling.
What is the time during the four stroke cycle when both valves are open?
During the four-stroke cycle, both the intake and exhaust valves are open simultaneously during the overlap period, which occurs at the end of the exhaust stroke and the beginning of the intake stroke. This typically happens just before the piston reaches the bottom of the exhaust stroke and just as it starts to descend for the intake stroke. The overlap allows for better scavenging of exhaust gases and aids in the intake of the fresh air-fuel mixture. The exact timing of this overlap can vary based on the engine's design and camshaft specifications.
What is valve overlap?
Valve overlap occurs in a four-stroke engine at the end of the Exhaust stroke and at the beginning of the Induction stroke; and is when both the exhaust and inlet valves are open at the same time. At the end of the Exhaust stroke, the Exhaust valve is closing and the Inlet valve is starting to open in preparation for the induction of fuel and air into the cylinder. It is common knowledge that in vehicles that cannot alter the valve timing, the Inlet valve opens approx 6 degrees before top-dead-centre and the Exhaust valve closes at 9 degrees after top-dead-centre
Advantages of two stroke engine over a four stroke engine?
Explain the advantages of four-stroke engine over two-stroke engine
Why does valve overlap happen?
Valve overlap occurs in internal combustion engines when both the intake and exhaust valves are open simultaneously at the end of the exhaust stroke and the beginning of the intake stroke. This overlap allows for better exhaust gas scavenging and can enhance the filling of the combustion chamber with fresh air-fuel mixture, improving engine efficiency and performance. It is particularly beneficial in high-performance engines, as it can optimize power output and reduce emissions. However, excessive overlap can lead to rough idling and reduced efficiency at low speeds.
Which engine was invented first.Two stroke engine or four stroke?
two stroke
Why fuel consumption is less in 4 stroke engine then in 2 stroke engine?
Why the fuel consumption is less in 4 stroke engine as compared to 2 stroke engine
What is better a four or two stroke engine?
in my opinion a two stroke engine is a better quality engine as compared to a four stroke engine!
What is meant by the term valve overlap?
There is a short time between the exhaust and intake stroke where all the valves are slightly open at the same time. This period of time is called valve overlap. This is because the intake valves are just starting to open as the exhaust valves are just finishing closing. This is done so flow through the engine can be maintained at engine operating speeds.
What are examples of two stroke engine?
Detroit diesel engine is an example of two stroke engine
The burning air-fuel mixture forces the piston down on what stroke?
Depends on if this engine is a 2 stroke, 4 stroke, or rotary engine. I assume you are referring to a 4 stroke as found in the vast majority of automobiles built today. The answer is, At the top of the compression stroke. The 4 strokes of a 4 cycle engine are:# intake/induction stroke # compression stroke # power stroke # exhaust strokeDepends on if this engine is a 2 stroke, 4 stroke, or rotary engine. I assume you are referring to a 4 stroke as found in the vast majority of automobiles built today. The answer is, At the top of the compression stroke. The 4 strokes of a 4 cycle engine are:# intake/induction stroke # compression stroke # power stroke # exhaust stroke
