20+ AADYAH AEROSPACE Interview Questions and Answers

Diesel engine parts are essential components that work together to convert fuel into mechanical energy.

• Diesel engine parts include the cylinder block, pistons, crankshaft, camshaft, fuel injectors, and turbocharger.

• The cylinder block houses the cylinders where combustion takes place.

• Pistons move up and down within the cylinders, compressing air and fuel mixture.

• The crankshaft converts the linear motion of the pistons into rotational motion.

• The camshaft controls the opening an...read more

Diesel engine performance curves and testing

• Performance curves show how engine performs at different speeds and loads

• Testing involves measuring parameters like power output, fuel consumption, and emissions

• Common tests include dynamometer testing and emissions testing

• Performance curves help in optimizing engine design and tuning for efficiency and power output

Diesel engines and petrol engines differ in fuel type, combustion process, and efficiency.

• Diesel engines use diesel fuel, while petrol engines use gasoline.

• Diesel engines compress air to ignite the fuel, while petrol engines use spark plugs.

• Diesel engines are more fuel-efficient and have higher torque, while petrol engines have higher power output.

• Examples: Cars with diesel engines include Volkswagen Golf TDI, while cars with petrol engines include Honda Civic.

Thermostat is a device that regulates temperature by turning heating or cooling systems on and off.

• Controls temperature by turning heating or cooling systems on and off

• Maintains desired temperature in a space

• Used in HVAC systems, refrigerators, water heaters, etc.

• Helps save energy by regulating temperature efficiently

The diesel engine cycles consist of four strokes: intake, compression, combustion, and exhaust.

• Intake stroke: Air is drawn into the cylinder through the intake valve.

• Compression stroke: The piston compresses the air, increasing its temperature and pressure.

• Combustion stroke: Fuel is injected into the cylinder and ignites, causing a rapid expansion of gases and pushing the piston down.

• Exhaust stroke: The piston pushes the exhaust gases out of the cylinder through the exhaust v...read more

A fuel injector is a device that delivers fuel into the combustion chamber of an internal combustion engine.

• Fuel injectors are typically located in the intake manifold or directly in the combustion chamber.

• They are controlled by the engine control unit (ECU) which determines the amount of fuel to be injected based on various sensor inputs.

• The fuel injector atomizes the fuel into a fine mist and sprays it into the combustion chamber.

• The atomized fuel mixes with the incoming ai...read more