Q78 A four cylinder, four-stroke Petrol engine has a compression ratio of 6 to 1. A test onthis engine gave the following results;Net brake load = 20 kg, effective brake arm = 0.5 m, indicated mep=6*105 N/m², enginespeed 2400 rpm, fuel consumption = 10 kg/h, Calorific value of the fuel = 44000kj/kg,Cylinder bore 86 mm, engine stroke-100mm.ข่าวลCalculate: the mechanical efficiency, ⑥the brake thermal efficiency the relativeefficiency assuming the engine works on the Constant volume cycle and that 8-1.4 forair⑧The brake mean effective pressure.Answers 1 88.4%, 48/5-35 × 105 N/m² 1وو

Answered: Image /qna-images/answer/62898351-9b77-4222-b64a-0e8f4ce1e121.jpg

Answered: Q78 A four cylinder, four-stroke Petrol…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

Engine Type Four cylinder Four stroke MPFI petrol engine(Maruti Zen), Bore: 0.072 m, Stroke: 0.061m Capacity: 993 cc, Power: 60 HP at 6000 rpm, Torque: 78.5 Nm at 4500 rpm and Compression Ratio :9.4:1. Explain how to calculate :- (1) Mechanical Efficiency (2) Brake Thermal Efficiency (3) Indicated Specific Fuel Consumption
The following data refers for the single cylinder 4 stroke diesel engine. The brake power is 73 kW and engine speed is 500 rpm. The break mean effective pressure is 8 bar and mechanical efficiency is 80 %. The BSFC of the engine is .30 kg/kWhr of the fuel calorific value of 43200 kJ/kg. Determine indicated thermal efficiency.
The following data are the results on a test of an Otto cycle engine: Torque= 1300N-m. Indicated mean effective pressure= 800kpa, Fuel consumption=0.004kg/sec Fuel heating value=43,816KJ/kg Bore and stroke= 30cm x 32cm Speed= 400rpm. Calculate the brake mean effective pressure in kpa.
1. A four stroke diesel engine gave the following test results at a speed of 450 RPM. Mean effective pressure - 850 kPa Cylinder bore - 22 cm. Stroke - 26 cm. Specific fuel consumption - 0.32 kg/BHP.hr Calorific value of fuel – 45000 kJ/kg. Mechanical Efficiency = 88% Determine the (a) BHP, (b) IHP, (c) Indicated themal efficiency, and (d) Brake thermal efficiency.
Question Design a 4 cylinder inline, turbo diesel engine to produce 103 kW of brake power at design speed when installed in a Multi-Purpose Vehicle (MPV). The square engine operates on a four stroke cycle and produces 20 bar of maximum brake mean effective pressure (bmep). Average piston speed is 11.5 m/s and bmep at peak power is 14.4 bar. If the decided values of torque position and torque increase are 50% and 28% respectively, determine the: a) bore b) stroke c) displacement d) maximum torque e) engine speed at peak torque as well as f) engine speed at peak power
Show Complete Solution
A four stroke eight cylinders square gasoline engine operating at 3000 rpm has a bore equal to 86 mm. If the mechanical efficiency is 82%, the indicated mean effective pressure is 1500 kPa, the brake specific fuel consumption is 0.1889 g/kW.s, the volumetric efficiency is 83%, the intake temperature is 27°C, the intake pressure is 1 bar and the gas constant for air is 287 J/kg.K, the air to fuel ratio is: Select one: O a. 2.89 Ob. 12.2 О с. 3.15 O d. 9.15
A crawler with 1.5 m diesel engine has the following information: Cost of equipment Shipping cost Unkoading &assembling at destination Engine Crankcase capacity 1lours between oil changes Operating factor Useful life, with no salvage value Hours operated per year Weight Cost of fuel per liter Cost of oil per liter Maintenance $82260 $2448 $220 160 hp 22.71 liter 100 hr 06 6 vears 2000 61700 kg 0.33 $/liter 0.53 S/liter 100% of Depreciation 12% of Average Valuc Investment 1- what is the initial capital cost of the crawler?
A four-cylinder, four-stroke diesel engine has a bore of 212 mm and a stroke of 292 mm. At full load at 720 rev/min the bmep is 5.93 bar and the specific fuel consumption is 0.226 kg/kW h. The air-fuel ratio as determined by exhaust gas analysis is 25/1.Calculate the brake thermal efficiency and the volumetric efficiency of the engine. Atmosphenc conditions are 1.01 bar and 15°C, and Qnet.p, for the fuel may be taken as 44 200 kJ/kg (36%: 76.1%) 13.6
Please solve the question quickly
Q1. During a test on a two stroke diesel engine on full load the following observations were recorded: Speed= 350 rpm Net brake load= 590 N Mean effective pressure= 2.8 bar Fuel consumption=4.3 kg/h Jacket cooling water= 500 kg/h Temperature of jacket water at inlet and outlet= 25°C and 509C respectively Air used per kg of fuel= 33kg Temperature of air in test room= 25°C Temperature of exhaust gases= 400°C Cylinder diameter= 220 mm Stroke length= 280 mm Effective brake diameter= 1 m Calorific value= 43900 KI/kg Proportion of hydrogen in fuel= 15% Mean specific heat of dry exhaust gases= 1.0 KI/kg K Specific heat of steam= 2.09 KJ/kg K Calculate: (1) indicated power (2) brake power (3) draw up heat balance sheet on minute basis.
Show from the following data taken for the automobile test performed on a 4 cylinder gasolineengine calculate the Brake Thermal Efficiency:Fuel intake = 9.78 lb/hourBrake output = 36.5 HPSpecific gravity of gasoline at 60°F = 0.738Room temperature = 78.5° FThrottle Setting = 9/16 full throttleHigh heating value (HHV) = 25,960 BTU/lbConversion factor 1HP = 2,545 BTU/hourMUST show all steps. MUST show units in each step.1 horsepower [international] = 0.746 kilowatt1 kilogram = 2.204 lbs1 BTU = 1.055 kilo joulesRound off ALL answers to three decimals. MUST show the units in every step.

SEE MORE QUESTIONS

Recommended textbooks for you

Elements Of Electromagnetics

Mechanical Engineering

ISBN:

9780190698614

Author:

Sadiku, Matthew N. O.

Publisher:

Oxford University Press

Mechanics of Materials (10th Edition)

Mechanical Engineering

ISBN:

9780134319650

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Thermodynamics: An Engineering Approach

Mechanical Engineering

ISBN:

9781259822674

Author:

Yunus A. Cengel Dr., Michael A. Boles

Publisher:

McGraw-Hill Education

Elements Of Electromagnetics

Mechanical Engineering

ISBN:

9780190698614

Author:

Sadiku, Matthew N. O.

Publisher:

Oxford University Press

Mechanics of Materials (10th Edition)

Mechanical Engineering

ISBN:

9780134319650

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Thermodynamics: An Engineering Approach

Mechanical Engineering

ISBN:

9781259822674

Author:

Yunus A. Cengel Dr., Michael A. Boles

Publisher:

McGraw-Hill Education

Control Systems Engineering

Mechanical Engineering

ISBN:

9781118170519

Author:

Norman S. Nise

Publisher:

WILEY

Mechanics of Materials (MindTap Course List)

Mechanical Engineering

ISBN:

9781337093347

Author:

Barry J. Goodno, James M. Gere

Publisher:

Cengage Learning

Engineering Mechanics: Statics

Mechanical Engineering

ISBN:

9781118807330

Author:

James L. Meriam, L. G. Kraige, J. N. Bolton

Publisher:

WILEY

SEE MORE TEXTBOOKS