MEASURING DEVICES FORINTERNAL COMBUSTION ENGINE

Multi cylinder SI engine

Quantity to measure & measuring devices:

Engine speed- dynamometer Air supply to engine(carburetor)- U tube

manometerVarious temperature of ic engine- temperature

sensor ( thermocouple, resistance thermometer).Exhaust gases heat losses- calorimeter Fuel consumptionFuel Air-RatioExhaust Smoke and EmissionsThermal Efficiency, Volumetric Efficiency Indicated Mean Effective Pressure, Brake Mean

Effective Pressure etc.

Engine speed:

Rope brake dynamometer generally use for measuring engine speed

o A rope is wound around the circumference of the brake drum. One end of the rope is attached with balance as shown in fig.

Rope brake Dynamometer

Air supply to engine(carburetor) Generally u tube manometer is use to check inlet air pressure and

by equation air consumption also find out.

Measurement of Airby Air Box Method.

Various temperature of ic engine- Internal temperature Exhaust gases temperature Inlet air temperature

For measuring this all temperature there are use different temperature measuring sensor Thermistor Thermocouple Resistance Thermometer Silicon band gap temperature sensor

Thermocouple and other sensor

Digital sound level meter

Full setup of test rig:

Manufacturer: Nebula equipment India mart