- Okulary Engine Wariables Ar Various Revis 1 2 4 5 6 Powertrake Air Fuel Ratio Specite Fuel Consumption Volumetrie 1 (117.61 KiB) Viewed 11 times
- Okulary Engine Wariables Ar Various Revis 1 2 4 5 6 Powertrake Air Fuel Ratio Specite Fuel Consumption Volumetrie 2 (117.61 KiB) Viewed 11 times
- Okulary Engine Wariables Ar Various Revis 1 2 4 5 6 Powertrake Air Fuel Ratio Specite Fuel Consumption Volumetrie 3 (117.61 KiB) Viewed 11 times
- Okulary Engine Wariables Ar Various Revis 1 2 4 5 6 Powertrake Air Fuel Ratio Specite Fuel Consumption Volumetrie 4 (117.61 KiB) Viewed 11 times
- Okulary Engine Wariables Ar Various Revis 1 2 4 5 6 Powertrake Air Fuel Ratio Specite Fuel Consumption Volumetrie 5 (121.49 KiB) Viewed 11 times
- Okulary Engine Wariables Ar Various Revis 1 2 4 5 6 Powertrake Air Fuel Ratio Specite Fuel Consumption Volumetrie 6 (207.03 KiB) Viewed 11 times
Okulary engine wariables ar various revis 1. 2. 4. 5. 6. Powertrake) Air Fuel ratio Specite Fuel Consumption Volumetrie Efficiency Thermal Efficiency % Table (a): Heat energy balance 3500 rpm, 3026 rpm & 2000 rpm ENERGY INPUT (R/min) ENERGY QUTPUT (kJ/min) Heat of combustion Mechanical Power = mcv Heat lost to exhaust = Other losses Total Total = Table S: Engine Technical details Item Ignition system Absolute Maximum Power Continuous Rated Power Specification Flywheel Magneto 8.1 kW (11hp) at 3600 rev.min! 5.9 KW (Shp) at 3600 rev.min! Bore 84 mm 61 mm/30.5 mm Stroke/ Crank Radius Connecting Rod Length Engine Capacity Compression Ratio Oil Type Calorific value of petrol Typical value for density of petrol Oil Capacity Orifice diameter 105.5 mm 338 cm (0.338 L) or 338 co 8: 1 Multigrade SAE 10 W - 30 45.8 MJ/kg 0.75 kg/l 1.2 Litre 21 mm Useful information Air Cd: 0.6 Exhaust Cp: 1 kJ/kg, K M AFR= 3 mass flow rate: ma Cd 20 Ap RTA M ma my Mg. sul m S F 2 ATE GAN G
Okulary engine wariables ar various revis 1. 2. 4. 5. 6. Powertrake) Air Fuel ratio Specite Fuel Consumption Volumetrie Efficiency Thermal Efficiency % Table (a): Heat energy balance 3500 rpm, 3026 rpm & 2000 rpm ENERGY INPUT (R/min) ENERGY QUTPUT (kJ/min) Heat of combustion Mechanical Power = mcv Heat lost to exhaust = Other losses Total Total = Table S: Engine Technical details Item Ignition system Absolute Maximum Power Continuous Rated Power Specification Flywheel Magneto 8.1 kW (11hp) at 3600 rev.min! 5.9 KW (Shp) at 3600 rev.min! Bore 84 mm 61 mm/30.5 mm Stroke/ Crank Radius Connecting Rod Length Engine Capacity Compression Ratio Oil Type Calorific value of petrol Typical value for density of petrol Oil Capacity Orifice diameter 105.5 mm 338 cm (0.338 L) or 338 co 8: 1 Multigrade SAE 10 W - 30 45.8 MJ/kg 0.75 kg/l 1.2 Litre 21 mm Useful information Air Cd: 0.6 Exhaust Cp: 1 kJ/kg, K M AFR= 3 mass flow rate: ma Cd 20 Ap RTA M ma my Mg. sul m S F 2 ATE GAN G
Okulary engine wariables ar various revis 1. 2. 4. 5. 6. Powertrake) Air Fuel ratio Specite Fuel Consumption Volumetrie Efficiency Thermal Efficiency % Table (a): Heat energy balance 3500 rpm, 3026 rpm & 2000 rpm ENERGY INPUT (R/min) ENERGY QUTPUT (kJ/min) Heat of combustion Mechanical Power = mcv Heat lost to exhaust = Other losses Total Total = Table S: Engine Technical details Item Ignition system Absolute Maximum Power Continuous Rated Power Specification Flywheel Magneto 8.1 kW (11hp) at 3600 rev.min! 5.9 KW (Shp) at 3600 rev.min! Bore 84 mm 61 mm/30.5 mm Stroke/ Crank Radius Connecting Rod Length Engine Capacity Compression Ratio Oil Type Calorific value of petrol Typical value for density of petrol Oil Capacity Orifice diameter 105.5 mm 338 cm (0.338 L) or 338 co 8: 1 Multigrade SAE 10 W - 30 45.8 MJ/kg 0.75 kg/l 1.2 Litre 21 mm Useful information Air Cd: 0.6 Exhaust Cp: 1 kJ/kg, K M AFR= 3 mass flow rate: ma Cd 20 Ap RTA M ma my Mg. sul m S F 2 ATE GAN G
4. DATA, FINDINDS & RESULTS 4.1.1 From the results, calculate the air mass flow rate, and plot the engine variables against speed. Then for comparison, plot all variables on one chart or several charts of the similar scale. The engine variables are: • Air/fuel ratio • Engine exhaust temperature • Torque • Power • Specific fuel consumption • Thermal efficiency • Heat balance for test. 4.1.2 Look at the power and efficiency curves. What is the approximate optimum speed for the engine? 4.2.1 Create three tables similar to table 4(a). 4.2.2 From the tables, create a pie chart of the energy output values as percentages of the energy input. What is noticeable about the losses at higher and lower speeds then the optimum performance speed? 4.2.3 What could cause the "other losses"? 5. DISCUSSION OF EXPERIMENTAL RESULTS The interpretation of the data gathered can be discussed in this section. Sample calculations may be included to show the correlation between the theory and the measurement results. If there exists any discrepancy between the theoretical and experimental results, an analysis or discussion should follow to explain the possible sources of error. 14:34 APPENDICES Table 1: Awruge fuel flow rate in mi's re/min 4. 8ml Average time 22,9 1950 13.2 22:51 22.9 23.5% Tomi Average time Use the average time for each of the volumes Table 2: Engine variables at various engine speeds (Atmospheric Pressure: 996 mbar 4. rey/ min 5. 6. T Ambient Temperature (°C) Chamber Temperature (°C) TZ Differential Pressure (Pa) OPI Torque (N.m) Cooling water flow rate (Umin) Power (Mechanical) (kW) 2100 21.3°C 21.3 2150 215 21:64 | 432 68 (735c|156c/8ore 1946 4132 191 -321-452 -667 - 7ao 125.735,2 /25.8 25.3 24.319.3 129 1/2.91/2.91 2.91 2.91/2.91 132You 6662 1196 13.27 419w510339 1747 19.04 19.5°C 19.14€ 19.920.20 20.3" /25.1°C/30.1°C 38.5c4 2.0°c 45.5 45.42 1564 136 41/255.26/313.6 18.9i 1050 29.40 / 35.8² ust. 74.40 84.5 54.si T: (Water inlet) (°C) T> (Water outlet) (°C) T: (Exhaust in) (C) T. (Exhaust out) ("C) 14:34
1. AIM OF THE LABORATORY EXPERIMENT To determine the basic characteristics of the Test Engine To determine energy balance for the Test Engine and predict the losses 2. THEORETICAL BACKGROUND This section is to discuss the theoretical aspects leading to the experiment. Typically, this involves the historical background of the theories published in the research literature and the questions or ambiguities arose in these theoretical work. Citations for the sources of information should be given in one of the standard bibliographic formats (for example, using square brackets with the corresponding number [2] that points to the List of References). Explore this background to prepare the readers to read the main body of the report. It should contain sufficient materials to enable the readers to understand why the set of data are collected, and what are the salient features to observe in the graph, charts and tables presented in the later sections. Depending on the length and complexity of the report, the introduction and the theoretical background may be combined into one introductory section. 3. EXPERIMENTAL METHOD, PROCEDURE & EQUIPMENT This section describes the approach and the equipment used to conduct the experiment. It explains the function of each apparatus and how the configuration works to perform a particular measurement. Students should not recopy the procedures of the experiment from the lab handout, but to summarize and explain the methodology in a few paragraphs.