Aero Engine Maintenance And Repair Quiz

The fourth and final stage of a four-stroke engine is called the exhaust stage. In this stage, the exhaust valve opens, allowing the burned fuel and air mixture to exit the combustion chamber and be expelled from the engine. This stage completes the cycle of the four-stroke engine, preparing it for the next intake stage where fresh fuel and air can enter the combustion chamber.

A piston is a cylindrical piece of metal that moves up and down within the cylinder of an engine. It is driven by the energy produced during the combustion process. As the fuel-air mixture ignites, it creates pressure that pushes the piston downward, converting the chemical energy into mechanical energy. The piston then moves back up, compressing the mixture and expelling the exhaust gases. This repetitive motion of the piston is what drives the engine and generates power.

MAP stands for Manifold Absolute Pressure. The Manifold Absolute Pressure sensor measures the pressure inside the intake manifold of an engine. This information is used by the engine control unit to calculate the amount of fuel to inject into the engine and to adjust ignition timing. The MAP sensor is an important component in the engine management system as it helps optimize engine performance and fuel efficiency.

The crankshaft makes a circular motion. This is because the crankshaft is a mechanical component that converts the reciprocating motion of the pistons into rotational motion. It does this by using the connecting rods and a crank mechanism to convert the up and down motion of the pistons into a circular motion. This circular motion is then transferred to the drivetrain of the vehicle, allowing the wheels to turn and the vehicle to move forward.

BHP stands for Brake Horse Power, which is a unit of measurement used to determine the power output of an engine. It represents the amount of power that an engine produces before any losses due to friction or other factors. Brake Horse Power is commonly used in the automotive industry to compare the power output of different vehicles.

IHP stands for Indicated Horse Power, which is a measurement of the power output of an engine. It represents the power produced by the engine's pistons during the combustion process. This measurement is important in determining the overall performance and efficiency of an engine.

Piston rings are responsible for keeping a tight seal on the piston heads so that fuel and air do not leak into the sump. This is important for the efficient combustion process in the engine, as any leakage would result in loss of power and potentially damage the engine. By maintaining a tight seal, the piston rings ensure that the fuel and air mixture is properly contained within the combustion chamber, allowing for optimal performance and preventing any potential issues.

The correct answer is "basket Chamber." A basket chamber is not a basic type of a combustion chamber. The basic types of combustion chambers include can and annular chambers.

Piston engines are commonly referred to as reciprocating engines because they operate by converting the reciprocating motion of pistons into rotational motion. The pistons move up and down within cylinders, drawing in air or fuel mixture and compressing it before igniting it to produce power. This back-and-forth motion of the pistons is what gives these engines their name.

Engine pistons are usually made of aluminum alloys because they are lighter. This is important because lighter pistons reduce the overall weight of the engine, resulting in improved fuel efficiency and performance. Additionally, lighter pistons allow for faster acceleration and smoother engine operation.

Atomisation is the process of breaking up a liquid into fine droplets by spraying. This is achieved by converting the liquid into a mist or spray, which consists of tiny droplets. This process is commonly used in various applications such as fuel injection systems, spray painting, and aerosol production.

Backfire refers to the combustion of fuel or an explosion occurring in the intake manifold or carburetor instead of the combustion chamber. This can happen when there is an imbalance in the air-fuel mixture, causing unburned fuel to ignite in the intake manifold. Therefore, the statement "Backfire takes place in the intake manifold" is true.

There are a total of six troubleshooting procedures.

The main purpose of supercharging is to increase MAP (Mean Arterial Pressure). Supercharging refers to the process of compressing the air entering the engine, which leads to an increase in the amount of air and fuel mixture that can be combusted. This results in a higher pressure in the combustion chamber, leading to increased power output from the engine. By increasing MAP, supercharging improves engine performance, providing more power and torque, especially at high speeds or under heavy load conditions.

The types of ignition systems are battery ignition system and magneto ignition system. A battery ignition system uses a battery to provide electrical energy to the spark plugs, while a magneto ignition system generates its own electrical energy through the rotation of a magnet. Both systems are used to ignite the fuel-air mixture in an internal combustion engine.