Internal Combustion Engine Basics Quiz
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Questions and Answers

Thermal efficiency of I.C.Engine is __________ E.C.Engine.

less than

KTA 1150-L engine is a ______ cylinder engine.

12

Weight to power ratio is less in __________.

I.C.Engine

I.C.Engine is __________ acting.

<p>Single</p> Signup and view all the answers

Kirloskar HA-694 engine fitted on PQRS is a ______ cylinder engine.

<p>6</p> Signup and view all the answers

4-stroke Diesel engine is an __________.

<p>I.C.Engine</p> Signup and view all the answers

Deutz Engine Model BF 12L 513C is a ______ cylinder engine.

<p>6</p> Signup and view all the answers

Total displacement volume in Cummins Engine Model NTA-855L is ______ cm3.

<p>855</p> Signup and view all the answers

I.C.Engine was made in the year __________ A.D.

<p>1876</p> Signup and view all the answers

Dr.Rudolf Diesel made the first Diesel engine in the year __________ AD.

<p>1892</p> Signup and view all the answers

In Cummins engine Model KTA 1150-L, the term used for application code is ______.

<p>L</p> Signup and view all the answers

Petrol engine is an example of __________ ignition.

<p>spark</p> Signup and view all the answers

Oil sump is made of ______.

<p>Cast Iron</p> Signup and view all the answers

Deutz engine Model BF12L 513C fitted on Plasser BCM is __________ cooled.

<p>water</p> Signup and view all the answers

In 4-stroke engines minimum ______ compression rings are used.

<p>1</p> Signup and view all the answers

Cummins Engines fitted on Track Machines are __________ cooled.

<p>air</p> Signup and view all the answers

In 4-stroke engines minimum ______ oil control rings are used.

<p>2</p> Signup and view all the answers

The __________ engine uses compression ignition.

<p>Diesel</p> Signup and view all the answers

The total number of cylinders in engine model KTA 1150-L is ______.

<p>12</p> Signup and view all the answers

Cummins Engine Model NTA-855L is categorized under ______ engine types.

<p>diesel</p> Signup and view all the answers

In actual working cycle, inlet valve gets closed in __________ stroke.

<p>compression</p> Signup and view all the answers

In actual working cycle, injection of fuel starts __________ before TDC in power stroke.

<p>14-18°</p> Signup and view all the answers

In actual working cycle, exhaust valve opens __________ before TDC in power stroke.

<p>5°-10°</p> Signup and view all the answers

In actual working cycle, exhaust valve gets closed __________ after TDC in suction.

<p>14°-18°</p> Signup and view all the answers

In Cummins engines, cylinders are counted from __________ side.

<p>flywheel</p> Signup and view all the answers

Viewing from flywheel side, diesel engines rotate __________.

<p>clockwise</p> Signup and view all the answers

In Deutz Engine Model BF 12L 513C, cylinders are counted from __________ side.

<p>flywheel</p> Signup and view all the answers

A Bank and B-bank are designated in __________ engine.

<p>Cummins</p> Signup and view all the answers

Flashcards

Thermal Efficiency of ICE

The efficiency of converting heat energy into mechanical work in an internal combustion engine (ICE) is typically lower than in an external combustion engine (ECE).

Weight-to-Power Ratio

Internal combustion engines generally have a better weight-to-power ratio compared to external combustion engines.

ICE Action

Internal combustion engines operate on a single power cycle, where combustion happens inside the engine cylinders.

4-Stroke Diesel Engine

A four-stroke diesel engine is a type of internal combustion engine that uses diesel fuel and operates on a four-stroke cycle.

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When was the First ICE Invented?

The first internal combustion engine was invented in the year 1860 AD.

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When was the First Diesel Engine Invented?

Dr. Rudolf Diesel invented the first diesel engine in the year 1892 AD.

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Petrol Engine vs. Diesel Engine

Petrol engines ignite the fuel-air mixture with a spark plug, while diesel engines use compression to ignite the fuel.

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Deutz BF12L 513C Engine Cooling

The Deutz BF12L 513C model engine used in Plasser BCM machinery is water-cooled.

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Cummins Engine Cooling

Cummins engines are typically water-cooled, ensuring efficient heat dissipation during operation.

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KTA 1150-L engine cylinder count

The KTA 1150-L engine is a 6-cylinder engine.

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Kirloskar HA-694 engine cylinder count

The Kirloskar HA-694 engine is a 6-cylinder engine.

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Deutz BF 12L 513C engine cylinder count

The Deutz Engine Model BF 12L 513C is a 12-cylinder engine.

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Cummins NTA-855L engine displacement

The total displacement volume of the Cummins Engine Model NTA-855L is 855 cubic inches (in³).

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Cummins KTA 1150-L application code

In the Cummins engine Model KTA 1150-L, the 'L' represents the application code.

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Oil sump material

The oil sump of an internal combustion engine (ICE) is typically made of cast iron.

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Minimum compression rings in 4-stroke engines

In four-stroke engines, a minimum of two compression rings are used.

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Minimum oil control rings in 4-stroke engines

Four-stroke engines require a minimum of one oil control ring.

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When does the inlet valve close?

In the actual engine cycle, the inlet valve closes during the compression stroke. This is after the intake stroke where air is drawn into the cylinder.

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When does fuel injection start?

In actual working conditions, fuel injection in diesel engines starts slightly before the top dead center (TDC) of the power stroke (around 5-10 degrees before TDC). This precise timing allows for optimal combustion.

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When does the exhaust valve open?

In a real working cycle, the exhaust valve opens before the top dead center (TDC) of the power stroke (usually between 14-18 degrees before TDC). This allows the exhaust gases to escape as the piston is still pushing down, reducing backpressure.

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When does the exhaust valve close?

The exhaust valve in an actual cycle closes after the top dead center (TDC) in the suction (intake) stroke. This typically happens around 14-18 degrees after TDC. This ensures that the incoming air is not mixed with the remaining exhaust gases.

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How are cylinders numbered in Cummins engines?

In Cummins engines, the numbering of cylinders starts from the flywheel side, which is the side where you'd see the large rotating wheel responsible for storing energy.

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Which way do diesel engines rotate?

Diesel engines, when viewed from the flywheel side, rotate clockwise. This means the flywheel turns in the same direction as the hands on a clock.

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How are cylinders numbered in Deutz BF12L 513C engines?

In Deutz BF12L 513C engines, the cylinder numbering also begins from the flywheel side. This is a standard practice across many engine models.

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What is the purpose of A-bank and B-bank?

In engines with multiple banks of cylinders, the labeling of A-bank and B-bank is used to distinguish the rows of cylinders. This helps differentiate which side of the engine a cylinder is located on.

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How are Cummins engines cooled?

Cummins engines often use a water-cooled system for efficient heat dissipation. This circulating water absorbs excess heat from the engine, preventing overheating and damage.

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How is the Deutz BF12L 513C engine cooled?

Deutz BF12L 513C engines, used in Plasser BCM machinery, employ a water-cooled system for efficient heat dissipation.

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Study Notes

I.C. Engine History and Development

  • Thermal efficiency of an internal combustion (I.C.) engine is less than that of an external combustion (E.C.) engine.
  • Weight-to-power ratio is lower in I.C. engines compared to E.C. engines.
  • I.C. engines can be single- or double-acting.
  • A four-stroke diesel engine is an internal combustion engine.
  • I.C. engines were invented around 1872
  • Dr. Rudolf Diesel developed the first diesel engine in 1892.
  • A petrol engine is a type of spark ignition engine.

I.C. Engine Types and Models

  • Deutz engine Model BF12L 513C is fitted on Plasser BCM and is air-cooled.
  • Cummins engines fitted on track machines are usually air-cooled.
  • The ΚΤΑ 1150-L engine has 12 cylinders.
  • The Kirloskar HA-694 engine, used on PQRS,is a 6-cylinder engine.
  • The Deutz Engine Model BF 12L 513C is an 8-cylinder engine.
  • The Cummins Engine Model NTA-855L has a total displacement volume of 855cm³.

I.C. Engine Constructional Details

  • Oil sumps are typically made of cast iron, aluminum, forged steel, or copper.
  • 4-stroke Engines use a minimum of two compression rings.
  • 4-stroke Engines use a minimum of two oil control rings.
  • Piston and connecting rods are joined by a gudgeon pin.
  • The small end of a connecting rod connects to the piston.
  • The center-to-center distance between crankpin and main journal is equal to the piston stroke.
  • The number of teeth on the camshaft gear is equal to the number of teeth on the crankshaft gear.
  • The camshaft rotates twice as fast as the crankshaft.

I.C. Engine Working Principle

  • The highest point a piston can reach going upwards in the cylinder is called Top Dead Center (TDC).
  • The lowest point a piston can reach going downwards in the cylinder is called Bottom Dead Center (BDC).
  • The complete movement of a piston from TDC to BDC (or vice-versa) is called a stroke.
  • The volume above TDC is the clearance volume.
  • The volume between the TDC and BDC is the swept volume.
  • The diameter of the engine cylinder is called the bore.

I.C. Engine Fuel Combustion

  • The specific gravity of high-speed diesel is between 0.82-0.92 and 1.24-1.26.
  • The minimum cetane number (CN) for high-speed diesel fuel is 30.
  • High-speed diesel may contain up to 3% sulphur as an impurity.
  • Incomplete combustion produces carbon monoxide (CO).
  • 1 part carbon monoxide is present in 10,000 parts of air.

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Description

Test your knowledge on the fundamentals of internal combustion engines with this engaging quiz. Questions cover various aspects such as engine types, components, and historical facts. Perfect for engineering students and enthusiasts alike.

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