What is the name of the process of removing the exhaust gas in a cylinder with the fresh air-fuel mixture for the next cycle?

Scavenging
Scavenging is the process of replacing the exhaust gas in a cylinder of an internal combustion engine with the fresh air/fuel mixture (or fresh air, in the case of direct-injection engines) for the next cycle.

How is the exhaust gases removed from the combustion chamber?

The process of removing burnt gases from the combustion chamber of the engine cylinder is known as scavenging. In a four-stroke cycle engine, scavenging is very effective because during the exhaust stroke the piston pushes out the burnt gases from the engine cylinder.

What is the name of the valve that controls the air-fuel mixture entering the 2 stroke engine?

reed valve
Atmospheric pressure through the carburetion system causes the air/fuel mixture to flow through the reed valve and enter the crankcase.

How does the fresh air and fuel enter the combustion chamber for a two-stroke engine?

Overall, a two-stroke engine contains two processes: Compression stroke: The inlet port opens, the air-fuel mixture enters the chamber and the piston moves upwards compressing this mixture. A spark plug ignites the compressed fuel and begins the power stroke.

Is the process of removing the exhaust gases from the engine cylinder?

In an internal combustion engine, the process of removing the burnt gases from the combustion chamber of the engine cylinder is known as Scavenging. Scavenging is a process of pushing exhaust gas out of the cylinder and drawing in fresh draught of air or air fuel mixture for the next cycle.

What happens to the exhaust valve during exhaust stroke?

Exhaust stroke: during the exhaust stroke, the inlet valve remains closed whilst the exhaust valve opens. The moving piston pushes the burned fumes through the now open exhaust port and another intake stroke starts again. During one cycle, the piston makes two round trips and the crankshaft revolves twice.

What happens to the air fuel mixture in exhaust stroke?

Fuel Chemistry During the intake stroke, the fuel and air mixture is drawn into the cylinder with the exhaust valve closed. Then the air and fuel mixture is compressed in a compression stroke. At the top of the stroke, the spark plug ignites the mixture.

How does exhaust gas recirculation work?

The EGR system works by returning a small portion of exhaust gas to the engine’s combustion chambers through the intake manifold, lowering combustion temperatures and therefore reducing the amount of NOx emitted. The EGR valve is the main component of the EGR system and it’s normally closed.

What is Kips in Kawasaki?

Kawasaki KIPS Kawasaki uses a power-valve system called KIPS (Kawasaki Integrated Power Valve System) on their two-stroke bikes. The KIPS utilizes both alterations in port height, closing of the secondary port ducting, and a resonant chamber. KIPS is operated by a mechanical governor on single cylinder machines.

What is the cycle of events in stroke diesel engine?

An internal-combustion engine goes through four strokes: intake, compression, combustion (power), and exhaust. As the piston moves during each stroke, it turns the crankshaft.

Which process is included in air standard diesel cycle Mcq?

Thermal Engineering Questions and Answers – Diesel Cycle (or) Constant Pressure Cycle. This set of Thermal Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Diesel Cycle (or) Constant Pressure Cycle”. 1. Which cycle is idealized cycle for the compression ignition engines?

Why do exhaust valves close after TDC?

The exhaust valve closes after a few degrees of piston reaching the TDC, i.e. when the piston starts to move down the cylinder in the suction stroke. This ‘overlap’ helps in better ‘scavenging’ or expelling the remaining exhaust gases from the engine cylinder.

What happens in the first stage of the fuel injection process?

Process 1 to 2: During this phase, the inlet port opens, and the piston will be drawn up, so it can compress the fuel-air mixture that entered the chamber. The compression causes the mixture to increase slightly in pressure and temperature —however, no heat is exchanged.

What is the intake phase of a two-stroke engine?

Ideal cycle-green line: Referred to as the intake phase, a two-stroke engine does not go through this phase. This is because four stroke engines begins with the piston drawn up, so it must be drawn down to intake the fuel-air mixture. However, a two-stroke engine can proceed with intaking the fuel-air mixture right away as seen in Process 1 to 2.

What are the four stages of the engine cycle?

Four Stroke Engine Cycle 1 Suction/Intake Stroke. Intake stroke occurs when the air-fuel mixture is introduced to the combustion chamber. 2 Compression Stroke. In compression stroke, the trapped air-fuel mixture is compressed inside the cylinder. 3 Power/Combustion Stroke. 4 Exhaust Stroke.

How does a four stroke engine work?

Four Stroke Engine A four-stroke engine is an internal combustion engine that utilizes four distinct piston strokes (intake, compression, power, and exhaust) to complete one operating cycle. A complete operation in a four-stroke engine requires two revolutions (720 0) of the crankshaft. Parts of a Four Stroke Engine