How many cylinders does Morse test have?
four
Objective: – Performance test and Morse test on a four-stroke four-cylinder petrol engine at constant speed.
Which are the assumptions have been taken for conducting the Morse test?
As a result of this the speed of the engine will decrease . Therefore , the load on the engine is reduced so that the engine speed is restored to its initial value . The assumption made on the test is that frictional power is depends on the speed and not upon the load on the engine .
Can you use Morse test on diesel?
in case of diesel engine. any reading, the initial speed must be restored by adjusting the load. When the Morse test is carried out: (i) The b.p. should be measured as soon as possible after making cylinder inoperative.
Why Morse test is not suitable for single cylinder?
But in case of a single cylinder engine if the fuel supply is cut off no output is obtained to conduct the performance test. Therefore Morse test is not suitable for a single cylinder engine.
Why is Morse test done what is the procedure to do it?
The purpose of Morse Test is to obtain the approximate Indicated Power of a Multi-cylinder Engine. It consists of running the engine against a dynamometer at a particular speed, cutting out the firing of each cylinder in turn and noting the fall in BP each time while maintaining the speed constant.
How is a Morse test conducted on a multi cylinder engine?
To conduct morse test on given multi cylinder petrol engine in order to determine the indicated power developed in the each cylinder of the engine and to determine the mechanical efficiency. Apparatus Required : 1. Multi cylinder petrol engine with ignition cut off arrangement 2.
What is the purpose of the Morse test?
Morse test is used to find a close estimate of indicated power of a multi cylinder engine. In this test the engine is coupled to a suitable brake dynamometer and the brake power is determined by running the engine at required speeds.
How is frictional power determined in a Morse test?
As a result of this the speed of the engine will decrease . Therefore , the load on the engine is reduced so that the engine speed is restored to its initial value . The assumption made on the test is that frictional power is depends on the speed and not upon the load on the engine . Definitions : Break power : (BP)
How is brake power measured in a Morse test?
Brake power when all cylinders firing 16.2kw Brake power when cyl.1 cut off 11.5 kw . Brake power when cyl. 2 cut off 11.6 kw. Brake power when cyl.3 cut off 11.68 kw. Brake power when cyl.4 cut off 11.57 kw.
To conduct morse test on given multi cylinder petrol engine in order to determine the indicated power developed in the each cylinder of the engine and to determine the mechanical efficiency. Apparatus Required : 1. Multi cylinder petrol engine with ignition cut off arrangement 2.
How is power developed in a Morse test?
Morse test is conducted to determine the power developed in each cylinder in a multi-cylinder engine. First the power developed by all the cylinders together is determined experimentally. Then the power of the individual cylinders are determined by cutting off the power supply to the spark plug of the cylinder under test.
Brake power when all cylinders firing 16.2kw Brake power when cyl.1 cut off 11.5 kw . Brake power when cyl. 2 cut off 11.6 kw. Brake power when cyl.3 cut off 11.68 kw. Brake power when cyl.4 cut off 11.57 kw.
How is the B.P measured on a multi cylinder engine?
The B.P is then measured when all cylinders are working . Then one cylinder is made in operative by cutting off the ignition to that cylinder . As a result of this the speed of the engine will decrease . Therefore , the load on the engine is reduced so that the engine speed is restored to its initial value .