Lab report ic engine 03
Download as DOCX, PDF6 likes5,911 views
The lab report summarizes an experiment measuring the torque, speed, and power of a 4-stroke diesel engine. A diesel engine analyzer and other sensors were used to collect data at different engine speeds. Torque increased with speed up to a point then began decreasing, while power reached a peak then decreased. Graphs of torque vs speed and power vs speed were included. The report concluded the experiment was successfully performed to observe the engine analyzer operation and relationships between torque, speed, and power.
Lab report ic engine 03
- 1. LAB REPORT INTERNAL COMBUSTION ENGINE GROUP MEMBERS: AMEER NAWAZ (08-HITEC-ME-16) ALI RAZA (08-HITEC-ME-14) ARSLAN FAZIL (08-HITEC-ME-19) SECTION: “C” EXP : “03” DATED : October 2011 SUBJECT: MEASUREMENT OF TORQUE,SPEED,AND POWER. SUBMITED TO: SIR KAMRAN KAYANI.
- 2. APPARATUS: Diesel engine analyzer (4-stroke). Solenoid valve. Pressure sensor. Temperature sensor. Fuel tank. Coolant (water). THEORY: In Diesel engine when the air is compressed, the fuel is sprayed after the compression stroke due to which the fuel ignites and hence the power stroke occurs. The speed of engine is at how many revolutions per minute the engine is rotating crank. In engine torque is measured by use of dynamometer. The dynamometer is used to measure breaking torque by the increasing water level inside the dynamometer in case of hydraulic dynamometer. There are other dynamometers as well in which the torque is measured by touch engine output (rotor) with a stator of dynamometer. Once the speed and torque of engine is measured it is used to calculate power. Power is the rate of energy transfer to or from the system. One can think of power as rate of doing work. Speed of engine is a rotational frequency. Indicated power is the theoretical power which is set by designer by maximum calculated power. This power is usually calculated from PV diagram. However the brake power is measured at the output including all losses. There is a relation between power and torque 𝑃=2𝜋𝑁𝑇 PROCEDURE: First of all turn non engine analyzer. Then the fuel flow meter was turned on and air tank intake was properly checked. Then with coil starter start engine analyzer. Note the reading from analyzing softwarein computer. At different speeds wemeasured torques. So speed and torque collectively gaveus power. TABLE: SPEED (rpm) TORQUE (Nm) POWER (watt) 1137 3.2 381.0 1881 5.4 1063 2719 6.7 1907 3193 6.4 2140 3664 5.7 2187
- 3. GRAPH # 01 (TORQUE vs SPEED) GRAPH # 02 ( POWER vs SPEED Discussions Conclusions: In this introductory practical of internal combustion engine lab it is observed that what the diesel engine analyzer is and how it works. And also the main parts of the engine analyzer 4-stroke diesel engine. And how to run a diesel engine analyzer and got reading procedure. And measurement of torque, power and speed and their relations and by plotting them on graph and checks the curves behavior between them. Finally it is concluded that the practical is performed successfully.