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Because air outside is generally cooler than where a heat causing engine is. The combustion chamber inside super heats the air

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What are the benefits of using a window fan for both exhaust and intake purposes in a room?

Using a window fan for both exhaust and intake purposes in a room can help improve air circulation, reduce humidity, and lower indoor temperatures. This can lead to better air quality, increased comfort, and potential energy savings.


How do control the temperature for a Bunsen burner?

Adjust the air intake and gas flow to control the temperature of a Bunsen burner. Increasing air intake will result in a hotter flame, while reducing it will make the flame cooler. Similarly, adjusting the gas flow will also affect the temperature of the flame.


What is the Relationship between energy intake energy expenditure and weight.?

Weight is determined by the balance between energy intake and energy expenditure. When energy intake exceeds expenditure, the excess energy is stored as fat, leading to weight gain. On the other hand, if energy expenditure exceeds intake, the body uses stored energy reserves, resulting in weight loss. Maintaining a balance between energy intake and expenditure is crucial for weight management.


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


In an internal combustion engine the gas vapor air mixture enters the cylinder during the stroke?

The gas vapor air mixture enters the cylinder during the intake stroke of the four-stroke cycle. This mixture is then compressed during the compression stroke before being ignited by a spark plug, leading to combustion and generation of power during the power stroke. Finally, the exhaust gases are expelled during the exhaust stroke.

Related Questions

How do you tell difference between exhaust valve and intake valve on 1998 suburban 5.7?

The intake valve is bigger.


What is the difference between exhaust and ventilation fan?

Exhaust fan is only use for exhaust the old air, while ventilation fan is use for both purpose intake and exhaust.


What is the difference between an intake manifold and an exhaust manifold?

The intake manifold is where the air and fuel mix and enter the engine. The exhaust manifold is where unspent gas and air exit the engine. In other words the intake manifold is where the engine breathes in and the exhaust manifold is how the engine exhales out.


What is the difference between dohc and sohc?

DOHC - Dual Overhead Cam. This means that there is an intake and an exhaust cam, allowing the valves to move differently for the intake and exhaust. SOHC uses a single cam with more lobes


Whats the difference between a B18A and B18B Honda engine?

the diffence is the intake manifold and exhaust manifolds are slitly bigger


What is the difference between the 8v and 16v jetta's?

8v.....of course.acually it is the number of valves in the head . An 8v has 2 per cylinder( one intake and one exhaust) a 16v has 4 valves per( 2 intake and 2 exhaust).


How do you tell the difference between intake and exhaust valves for a 3.1 letter 98 Chevy Malibu?

In a 1998 Chevy Malibu with a 3.1-liter engine, the intake valves are generally larger than the exhaust valves. The intake valves are located on the side of the engine that faces the air intake system, while the exhaust valves are positioned on the side connected to the exhaust manifold. Additionally, the intake valves typically have a longer stem compared to the exhaust valves, which can help in distinguishing between them. Always refer to the vehicle's service manual for precise specifications and diagrams.


What is the difference between 1800cc and 2500cc engine?

The difference is in the size of the engine. Specifically in the intake and exhaust ports. The bore and stroke of the crank and pistons and the size of the combustion chambers.


Is there a difference between intake and exhaust hydraulic valve lifters?

No the lifters themselves are all the same. I recommend lightweight pushrods though if you can get them and stay with hydraulic.


Which is intake and exhaust?

Your exhaust lines up with exhaust pipes ,your intake lines up with your intake runners.


How do you find the intake and exhaust lifters on a engine?

The exhaust lifters will line up with the exhaust manifolds,Remove the valve cover if your working on a V8 and the valve that lines up with the exhaust port will be the exhaust valve,If it is a Chevy V8 they will be from standing in front of the car exhaust,intake,intake,exhaust,exhaust,intake,intake,exhaust.


With increasing temperature of intake air IC engine efficiency?

as intake air temperature increases it lead to decreas in i.c engine efficiency. as engine efficiency is ratio of difference in intake and outlet temperature to intake temperature.