What is Firing Order of 2, 3, 4, 6 and 8 Cylinder Engine in Hindi

Firing order of a multi cylinder engine is the power delivering sequence of each cylinder which is set by the designer such that the combustion of fuel in different cylinders occurs in a predefined order that can produce uninterrupted and maximum power output through the crankshaft of an multi-cylinder engine.

(i) In-Line 2 cylinder engine of a Tata Nano –
In Tata Nano, 2-cylinder in-line engine is used even being the more than 1-cylinder engine, firing order is not so complex as it is quite obvious that when cylinder 1 will get firing or the spark plug ignition than the cylinder 2 will be at compression stroke and the order of the firing will be 1-2.

(ii) In-Line 4 cylinder engine of a Maruti Suzuki Swift–
In cars like swift having 4-cylinders placed in a straight line, the firing order is configured as 1-3-4-2 which means all the cylinders will have firing or the spark plug ignition according to the 1-3-4-2 sequence, it is found that in a 4 cylinder engine a complete firing order gives 720 degrees of the crankshaft rotation which means each power stroke by the individual piston gives 180 degree of rotation to the crankshaft.

All the 4 cylinders in In-line 4 cylinder engine are mounted over four pins of the crankshaft placed in every 180 degree of the crankshaft.

For the smooth working of a 4-cylinder engine it is required that each cylinder will have different stroke at any instant.
For example-
At any instant in a inline 4-cylinder engine usually it is seen that when cylinder 1 is having power stroke than cylinder 4 is usually seen to be suction stroke, cylinder 2 and cylinder 3 are usually seen to be at exhaust and compression stroke respectively.

(iii) V-Shape 2 cylinder engine of a Harley Davidson Iron 833 bike- In Harley Davidson Iron 833, 2-cylinder engine placed in V-shape is used in which same firing order as in-line 2-cylinder engine mentioned above is used i.e. 1-2.

(iv) V-Shape 6 cylinder engine of Honda Accord-
In the high end cars line Honda Accord and Audi A-8, high power engine having multiple cylinders are used as in Honda Accord, 6 cylinder engine placed in V-shape is used in which a proper and effective firing order is required.

The firing order in Honda Accord ( 6-cylinders placed in V-shape such that cylinder 1,2,3 are placed in left hand side and 4,5,6,are placed in right) is configured as 1-5-3-6-2-4.

Firing order 1-5-3-6-2-4 means the crank pins having piston mounted are arranged in every 60 degree of the crankshaft.

As the power impulse is generated in every 720 degree rotation of the crankshaft which means that power stroke in V6 engine is obtained in every 120 degree rotation of the crankshaft.

(v) Flat-six cylinder engine used in Porsche 911 GT3-
In some cars like Porsche 911 GT3 6- cylinders placed in horizontal plane having opposite direction i.e. cylinder 1,2,3 are placed in left side and cylinder 4,5,6 are arranged in right side, are used.

same as the V6 engine all the pistons are mounted over 6 crank pins placed in every 60 degree of the crankshaft.

The firing order of this type of engine is configured as 1-4-5-2-3-6 which means that the firing or spark ignition will occur at every 120 degree of the crankshaft rotation.

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