QUESTION 10 A four-cylinder, 3.6-liter, four-stroke cycles Sl engine operates at 2700 RPM with a volumetric efficiency of 87 %. The fuel used is methyl alcohol. The chemical reaction of methyl alcohol in a Stoichiometric condition is: CH3OH + 1.5(02 + 3.76N2) - CO2 + 2H20 + 1.5(3.76N2) The chemical reaction of methyl alcohol in an equivalence ratio of o = 1.23 is: CH3OH + m(02 + 3.76N2) → NCO2 + pCO + 2H20 + m(3.76N2) During combustion, all hydrogen is converted to water, and all carbon is converted to CO2 and CO. The density of standard air is 2.25 kg/m3, The atomic masses are as follows: He1, C-12, 0-16, and N=14, Calculate the following: m is n is p is Mole fraction of CO in the exhaust is The mass flow rate of air into the engine is gram/s.

QUESTION 10 A four-cylinder, 3.6-liter, four-stroke cycles Sl engine operates at 2700 RPM with a volumetric efficiency of 87 %. The fuel used is methyl alcohol. The chemical reaction of methyl alcohol in a Stoichiometric condition is: CH3OH + 1.5(02 + 3.76N2) - CO2 + 2H20 + 1.5(3.76N2) The chemical reaction of methyl alcohol in an equivalence ratio of o = 1.23 is: CH3OH + m(02 + 3.76N2) → NCO2 + pCO + 2H20 + m(3.76N2) During combustion, all hydrogen is converted to water, and all carbon is converted to CO2 and CO. The density of standard air is 2.25 kg/m3, The atomic masses are as follows: He1, C-12, 0-16, and N=14, Calculate the following: m is n is p is Mole fraction of CO in the exhaust is The mass flow rate of air into the engine is gram/s.

Automotive Technology: A Systems Approach (MindTap Course List)

6th Edition

ISBN:9781133612315

Author:Jack Erjavec, Rob Thompson

Publisher:Jack Erjavec, Rob Thompson

Chapter9: Automotive Engine Designs And Diagnosis

Section: Chapter Questions

Problem 15RQ: Which of the following is an expression of how much of the heat formed during the combustion process...

See similar textbooks

Similar questions

During a test on a diesel engine used for driving a dc generator, the following observations were made. The engine torque is 1290 N-m running at 360 rpm. The quantity of fuel supplied to the engine was 10.8 kg/h, the calorific value of fuel being 44 MJ/kg. The air used/kg fuel is 19 kg. The exhaust gases were passed through an exhaust gas calorimeter for which the observations were as follows: Water circulated through the calorimeter = 150 gal/h, temperature rise of water is 30°C, temperature of the exhaust gases at exit from the calorimeter = 87°C, specific heat of exhaust gases = 1.04 kJ/kg-K, ambient temperature = 30°C. If the heat lost to the jacket cooling water was 94% of the brake power of the engine, draw up an energy balance sheet of the engine.
Determine the ideal air-fuel ratio of an engine whose octane rating is 98.
In your own words, differentiate two-stroke engine cycle and four-stroke engine cycle.
Discuss the difference between gasoline and diesel engines. Explain how octane rating affects gasoline engine performance.
Two units four-stroke, 6-cylinder diesel engine is running at a speed of 1200 rpm is used to supply power to a free port zone. The fuel oil used has 26 ˚API with a temperature of 85 ˚F. Other engine data are as follows: Generator efficiency = 95% Mechanical efficiency = 87% Overall thermal efficiency = 65% Expansion ratio = 2.6 Cut-off ratio = 5 Volume at the end of combustion = 2.1 ft3 Mean effective pressure = 120 psi For continuous operation, how many days a fuel storage tank size 30 feet long and 20 feet diameter be consumed if the tank is initially full?
Discuss the main functions of the lubricating system of an engine
What are the advantages and disadvantages of two stroke and four stroke engines. (any four points)
Discuss the basic operating principles of a diesel and gasoline engine.
Regarding the over-all engine performance, the following measures of performance will have comparative significance with accordance to the reliability, durability, and maintenance. I. At maximum rating points: II. At all speeds at which the engine will be used with full throttle (control) or with maximum fuel-pump setting. III. At all useful systems of operation and particularly in those in which the engine is run for long periods of time. Explain each of the above factor in detail.
2- What is normal air flow rate? How is air flow pressure measured? 4- Which engine produces the most torque (diesel or petrol)? why? 5- Mention the air fuel ratio required by the engine during (a) Starting time zero load (b) Normal running half load (C)full load 6- Types of lubrication in an IC engine?
What is the difference between four-stroke, gasoline-burning and two-stroke, gasoline-driven internal combustion engine?
The spark-ignition engines run on a mixture of gasoline and air. The amount of mixture the engine can take in depends upon following major factors: (i) Engine displacement. (ii) Maximum revolution per minute (rpm) of engine. (Hi) Carburetor air flow capacity. (iu) Volumetric efficiency of engine. Explain each of the above factor in detail.