Automobile Engine Construction Quiz

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Questions and Answers

What are the key parts of an automobile that produce power to move the vehicle?

Engine

What are the different types of engines based on the method of igniting the fuel?

Spark Ignition (SI) engines, Compression Ignition (CI) engines, Hot spot ignition engines

What is the classification of engines based on the number of strokes per cycle?

Four stroke cycle engines, Two stroke cycle engines

What are the different types of IC engines based on the cycle of operation?

Otto cycle engines, Diesel cycle engines, Dual combustion cycle engines Signup and view all the answers

According to the speed of the engine, what are the three categories of engines?

Slow speed engines, Medium speed engines, High speed engines Signup and view all the answers

What are the types of IC engines based on the type of fuel used?

Petrol engines, Diesel engines, Gas engines Signup and view all the answers

What are the three types of engines based on the cooling system?

Air-cooled engines, Water-cooled engines, Evaporative cooling engines Signup and view all the answers

Name the three types of engines based on the method of fuel injection.

Carburetor engines, Air injection engines, Airless or solid injection engines Signup and view all the answers

List the two types of engines based on the number of cylinders.

Single cylinder engines, Multi-cylinder engines Signup and view all the answers

What are the seven types of engines based on the arrangement of cylinders?

Vertical engines, Horizontal engines, Radial engines, In-line multi-cylinder engines, V-type multi-cylinder engines, Opposite-cylinder engines, Opposite-piston engines Signup and view all the answers

Name the two types of engines based on the valve mechanism.

Overhead valve engines, Side valve engines Signup and view all the answers

What are the three methods of governing in engines?

Hit and miss governed engines, Quantitatively governed engines, Qualitatively governed engines Signup and view all the answers

Name three main components of IC engines.

Cylinder, Cylinder Head, Piston Signup and view all the answers

What is the firing order for an inline four-cylinder engine?

1-3-4-2 and 1-2-4-3 Signup and view all the answers

Why is the firing order not sequential in engines?

To provide proper stability and even distribution of load on the crankshaft Signup and view all the answers

What is the purpose of the firing order in engines?

To produce a dynamic balance in the working of the engine Signup and view all the answers

Study Notes

Power Production

The internal combustion (IC) engine is the primary power source in most automobiles. It converts the chemical energy of fuel into mechanical energy, turning the crankshaft and ultimately driving the wheels.

Types of Engines by Fuel Ignition

Spark Ignition (SI) Engines: Use a spark plug to ignite the air-fuel mixture, common in gasoline engines.
Compression Ignition (CI) Engines: Rely on high compression to ignite the fuel, found in diesel engines.

Classifications by Strokes

Two-stroke Engine: Completes the power cycle in two strokes of the piston (intake and exhaust), offering lighter weight but potentially higher emissions.
Four-stroke Engine: Works through four piston strokes (intake, compression, power, exhaust), achieving higher efficiency and smoother operation.

Types of IC Engines by Operating Cycle

Otto Cycle: Used in most gasoline engines, characterized by a constant volume heat addition.
Diesel Cycle: Employed in diesel engines, features a constant pressure heat addition.

Engine Speed Categories

Low-Speed Engines: Operate at lower RPMs, typically used for heavy duty applications like marine engines.
Medium-Speed Engines: Offer a balance between speed and power, common in industrial and power generation applications.
High-Speed Engines: Designed for high RPMs, frequently used in automobiles and aircraft.

Types of IC Engines by Fuel Type

Gasoline Engines: Use gasoline as fuel, providing relatively high power output.
Diesel Engines: Utilize diesel fuel, known for good fuel efficiency and high torque.
Biodiesel Engines: Can run on biodiesel, a renewable alternative to petroleum diesel.

Types of Engines by Cooling System

Air-Cooled Engines: Rely on air flow to dissipate heat, used in smaller applications.
Water-Cooled Engines: Utilize a liquid cooling system for better heat rejection, common in automobiles.
Oil-Cooled Engines: Employ oil circulation for cooling, used for applications requiring high operating temperatures.

Types of Engines by Fuel Injection Method

Carbureted Engines: Employ a carburetor to mix fuel and air, less precise than direct injection.
Port Fuel Injection (PFI): Injects fuel into the intake port before the combustion chamber.
Direct Injection (DI): Injects fuel directly into the combustion chamber for improved efficiency.

Types of Engines by Number of Cylinders

Single-Cylinder Engines: Economical for simple applications, limited power output.
Multi-Cylinder Engines: Provide increased power and smoother operation, common in automobiles.

Types of Engines by Cylinder Arrangement

Inline (I): Cylinders arranged in a single line, offering simplicity and compactness.
V-Type (V): Cylinders arranged in a V-shape, provides balanced operation.
Horizontal-opposed (H): Cylinders positioned opposite each other, creating low vibration and smooth operation.
Radial (R): Cylinders arranged around a central crankshaft, offers high power output in a compact space.
W-Type: Cylinders arranged in a 'W' shape, combining advantages of V and H configurations.
Boxer Engine: Similar to H-type, commonly used in Porsche vehicles.
Rotary Engine: Uses a rotating combustion chamber, provides smooth operation with high power output in a compact design.

Types of Engines by Valve Mechanism

Overhead Valve (OHV): Valves located above the piston, traditional design.
Overhead Cam (OHC): Camshaft positioned above the valves, offers improved valve timing and performance.

Governing Methods

Mechanical Governing: Uses a mechanical system to regulate engine speed, sensitive to load variations.
Electronic Governing: Utilizes electronic controls to maintain engine speed, provides precise speed control.
Hydraulic Governing: Employs hydraulic pressure to control engine speed, offers smooth and stable operation.

Main Components of IC Engines

Crankcase: Houses the crankshaft and connecting rods, providing structural support.
Cylinder Block: Contains the cylinders, supporting the pistons during combustion.
Cylinder Head: Covers the top of the cylinder, houses the valves and spark plugs.

Firing Order in Inline Four-Cylinder Engines

The firing order is 1-3-4-2, meaning cylinder #1 fires first, followed by cylinder #3, then #4, and lastly #2.

Reasons for Non-Sequential Firing

Engines employ non-sequential firing orders to balance rotational forces, minimize vibrations, and distribute power delivery more evenly across the crankshaft.

Purpose of Firing Order

The firing order ensures smooth engine operation, reduces vibrations, and optimizes power delivery, resulting in a more comfortable and efficient driving experience.

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Description

Test your knowledge of automobile engine construction with this quiz. Explore topics like cylinder block, piston rings, cam shaft, and valve operating mechanism.