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SPARK PLUG WORKING AND TYPES

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 This blog about the automobile knowledge, about vehicles internal ,external parts working & construction of the automobile all types of theoretical & practical knowledge of the automobile.

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Comparison between Four stroke and two stroke engines

Comparison between Four stroke and two stroke engines Four stroke engine Two stroke engine 1.One working stroke for every two revolution of crank shaft 1.One working stroke for each revolution of the crankshaft 2.Turning moment on the crankshaft is not due to one working stroke for every two revolution of the crankshaft Hence heavy flywheel is required & Engine runs unbalanced. 2.Turning moment of the crankshaft is more even due to one working stroke for each revolution of the crankshaft Hence lighter flywheel is required and engine runs balanced. 3. Engine is heavy . 3. Engine is light. 4.Emgine design is complicated. 4.Engine design is simple. 5.More cost . 5.Less cost . 6.less mechanical efficiency due to more friction on many parts. 6.More mechanical efficiency due to less friction on a few parts. 7.Mor...
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SPARK PLUG WORKING AND TYPES

  SPARK PLUG WORKING, TYPES, CLEANING THE SPARK PLUG AND FAILURE. WORKING:   The function of the spark plug is to produce an electric spark to ignite the compressed air fuel mixture inside the cylinder. It must produce the spark   at the correct movement at the end of the compression stroke. A proper gap is to be maintained between the two electrode of the spark plug so that the sparking may take place. When the spark plug is screwed in the cylinder head, the ground electrode is said to be connected with ground. The terminal of the centre electrode is directly connected with H.T leads of the ignition coil in case of single cylinder engine, or through the distributor in case of multi cylinder engine. The secondary circuit ot the electrical system to be completed through the gap between the electrodes. When the H.T. current passes through the circuit, it jumps the gap producing a , spark, which ignites the compressed air fuel mixture in the cylinder. Spark plug with a r...
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Information of Cylinder block

  Cylinder block . Cylinder block, cylinder head and crankcase these three parts from the foundation and main stationary body of the automobile engines. They serve as support enclosure for moving parts. In modern engines the cylinder block and crankcase from a single casting which gives a rigid structure. The cylinder block may also have a separate crankcase for the crankshaft which is mainly confined to large engines, marine and stationary engines. A separate aluminium crankcase would result in saving the weight as well as enable cheaper and quicker replacement.  1. The cylinder in which the piston slide up and down 2. The ports or opening for the valves 3. The passages for the flow of cooling water The cylinder block is usually made from grey cast iron , and sometimes, with addition of nickel and chromium. Some blocks are cast from aluminium, in which cast iron or steel sleeves are used. For most engines cast iron has been found to be a satisfactory cylinder wall materia...
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