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Basic Engine Construction: Spark Ignition vs. Four-Stroke Diesel Engine

10 Questions

2 Views

Basic Engine Construction: Spark Ignition vs. Four-Stroke Diesel Engine

Created by

@Reusl

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Questions and Answers

Which type of engine in the text uses spark ignition?

Two-stroke gasoline engine

Four-stroke gasoline engine (correct)

Two-stroke diesel engine

Four-stroke diesel engine

How is the fuel delivered to the cylinder in a four-stroke diesel engine?

By mixing with air in the cylinder

By using compression ignition

Via a fuel injector pump and fuel injector nozzle (correct)

Through a carburetor

What closes one end of the cylinder in both types of engines discussed?

Cylinder liner

Fuel injector nozzle

Moving piston (correct)

Inlet valve

What connects to the inlet and exhaust manifolds in the cylinder head?

Flow passages Signup and view all the answers

What circulates through the water jackets in the cylinder and head?

Cooling water Signup and view all the answers

What is the function of the camshaft in a diesel engine?

To operate the valve push rods Signup and view all the answers

What drives the camshaft in a diesel engine?

Connecting gear Signup and view all the answers

What is the function of the fuel injector pump in a diesel engine?

To supply high-pressure fuel to the fuel injector nozzle Signup and view all the answers

What is the purpose of introducing fuel oil at a higher pressure in a diesel engine?

To produce spontaneous combustion of the fuel Signup and view all the answers

What does the high compression ratio in a diesel engine produce?

Force on the piston for driving the engine Signup and view all the answers

Study Notes

Engine Components and Functions

The engine type that uses spark ignition is a petrol engine.

Cylinder Structural Components

The piston closes one end of the cylinder in both petrol and diesel engines.

Fuel System Components

In a four-stroke diesel engine, fuel is delivered to the cylinder through fuel injectors.
The fuel injector pump is responsible for delivering fuel oil at high pressure in a diesel engine.
The purpose of introducing fuel oil at high pressure in a diesel engine is to create a high compression ratio.

Cylinder Head Components

The inlet and exhaust manifolds connect to the cylinder head.

Cooling System Components

Coolant circulates through the water jackets in the cylinder and head.

Camshaft and Valve Operation

The camshaft operates the valves in a diesel engine.
The camshaft is driven by the crankshaft in a diesel engine.

Compression and Combustion

The high compression ratio in a diesel engine produces heat, which ignites the fuel.

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Description

This quiz covers the basic construction of a four-stroke gasoline engine with spark ignition and a carburetor, as well as a four-stroke diesel engine with compression ignition and no carburetor. It discusses the differences in operation, fuel delivery, and number of cylinders.