Business Management

Month: December 2022

  • Comparison Between SI and CI Engines

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    haroon
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    Comparison between SI and CI engines is summarized in Table 6.2a.   Table 6.2a Comparison Between SI and CI Engines SI engines CI engines It is based on Otto cycle or constant volume heat addition and rejection cycle.A high volatile, high self-ignition temperature fuel, gasoline is used.A gaseous mixture of fuel and air is inducted during suction…

  • Two Stroke CI Engine

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    The working of two strokes CI engine is very similar to two stroke SI engine. The main difference is that in CI engine supercharged air is used through the inlet port and in place of exhaust ports exhaust valves are used. Pressurized air is inducted through the inlet port which expels the combustion gases through…

  • Two-stroke Spark Ignition Engine

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    haroon
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    In a four stroke SI engine, there is one power stroke in two revolutions of crankshaft and two strokes, viz., suction and exhausts are non-productive. If these two non-productive strokes could be served by an alternative arrangement especially without movement of the piston then there will be one power stroke for each revolution of the…

  • Four Stroke Compression Ignition Engine

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    haroon
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    The four stroke compression ignition (CI) engine is very similar to the four-stroke spark ignition engine as shown in Figure 6.6, but it operates at a much higher compression ratio. The compression ratio of SI engines varies from 6 to 10 whereas in CI engines it ranges from 16 to 20. During the suction stroke, air…

  • Four Stroke Compression Ignition Engine

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    by

    haroon
    in

    The four stroke compression ignition (CI) engine is very similar to the four-stroke spark ignition engine as shown in Figure 6.6, but it operates at a much higher compression ratio. The compression ratio of SI engines varies from 6 to 10 whereas in CI engines it ranges from 16 to 20. During the suction stroke, air…

  • WORKING PRINCIPLE OF IC ENGINES

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    Working principle of an IC engine consists of thermodynamic cycle involved to generate the power and thermodynamic processes such as suction, compression, heat addition expansion and heat rejection. In this chapter, we will study the operating principles of four strokes and two strokes of spark ignition engine and compression ignition engine.

  • Nomenclature

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    There are various terms which are frequently used in an IC engine and are discussed below.

  • BASIC STRUCTURE OF IC ENGINES

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    haroon
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    Even though reciprocating internal combustion engines look very simple in appearance, they are highly complex machines. There are a large number of components which have to perform their functions to produce power. Before going through the working principle of the complex machine, a brief description of the engine components is shown in Figure 6.2. Figure 6.2 The…

  • CLASSIFICATION OF IC ENGINES

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    haroon
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    There are several bases for classification of IC engines, some of the important bases can be explained as Number of Strokes per Cycle: IC engines can be classified as four stroke engines (4S) and two stroke engines (2s). In four stroke engines, the thermodynamic cycle is completed in four strokes of the piston or two revolutions…

  • INTRODUCTION

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    haroon
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    “The heat engine, in which the combustion takes place inside the cylinder or the product of combustion (flue gas) directly goes to the cylinder and the heat energy of the flue gas is converted into mechanical energy, is known as Internal Combustion Engine (IC Engine).” The combustion may take place either inside or outside the…