Ex 1: A petrol engine of compression ratio 6 uses a fuel of calorific value43950kJ/kg. The air – fuel ratio is 15:1. The temperature and pressure of the charge at the charge at the end of the suction stroke are 60°C and 1 bar. Determine the maximum pressure in the cylinder if the index of compression is 1.32 and the specific heat at constant volume is expressed by the expression; C, = 0.71 + 19 x 10°T kJ/kg K, where T is the %3D temperature in K. Compare this value with that when constant specific heat C, 0.72 is used.

Ex 1: A petrol engine of compression ratio 6 uses a fuel of calorific value43950kJ/kg. The air – fuel ratio is 15:1. The temperature and pressure of the charge at the charge at the end of the suction stroke are 60°C and 1 bar. Determine the maximum pressure in the cylinder if the index of compression is 1.32 and the specific heat at constant volume is expressed by the expression; C, = 0.71 + 19 x 10°T kJ/kg K, where T is the %3D temperature in K. Compare this value with that when constant specific heat C, 0.72 is used.

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

Related questions

Q: At the beginning of compression, the temperature of air is 300 K. The compression ratio is 13 and…

A: GivenT1=300Krk=13PmaxPmin=P3P1=60Qv=QP

Q: The compression ratio of an air-standard gasoline engine is 7.5. The heat added is 1700 kJ/kg. If…

A: Given:Compression ratio, r=7.5Heat added, Qi=1700 kJ/kgInitial pressure and temperature, P1=100…

Q: Question B1 - Compression Before entering the engine of a BMW320D, air drawn in at 20°C and…

A: according to the details provided

Q: Which is correct? The pressure ratio of a gas turbine engine compressor is: - equal to the…

Q: Before compression of an ideal Otto cycle the air is at 100 kPa and 300 K. The compression ratio is…

A: The problem is about an ideal Otto cycle, which is a model for the thermodynamic cycle in a spark…

Q: Question Three Air flows steadily adiabatically through a pipe with a constant cross-sectional area.…

Q: You would like to raise the temperature of an ideal gas from 320 K to 990 K in an adiabatic process.…

Q: The temperature at the end of adiabatic compression of a Diesel engine with a compression ratio of…

A: Introduction One of the air-standard cycles that treat air as a working fuel is the diesel cycle. In…

Q: An Otto cycle engine installed in a road vehicle has a volume compression ratio of 6 and provides a…

A: Given data as per question Volume compression ratio = 6 Cp=1004 j/kg.k Cv = 717j/kg.k we know that

Q: Problem 2. A small rocket motor, that uses hydrogen and oxygen for the fuel, is operated in a…

A: Given, The stagnation temperature, T0=1500 K The stagnation pressure, P0=8 MPa=8000 kPa+101.325…

Q: Calculate the efficiency of a powerplant operating at a high temperature of 580oC and a low…

A: Given:- TH =580oC =580+273= 853K TL=60 oC=60+273= 333K To find:- Efficiency

Q: A turbojet is flying with a velocity of 900 ft/s at an altitude of 20,000 ft, where the ambient…

A: Draw T-s diagram for turbojet cycle.

Q: The conditions at the beginning of the compression process of an air standard Diesel cycle are 150…

Q: Determine the mean effective pressure in kPa of a certain air -standard Diesel cycle which has a…

Q: Determine the ideal and actual work into the compression process for a gasoline engine with an…

Q: PI3.1 In a certain diesel engine with a bore of 96 mm (3.78 in.), the thickness of the top ring is…

A: Part aA1=π4do2Heredo=Outer diameter=96mmA1=π4×962A1=7238.23 mm2A1=7.238×10-3 m2A2=π4do2-di2di=inner…

Question

Ex 1: A petrol engine of compression ratio 6 uses a fuel of calorific value43950kJ/kg.
The air – fuel ratio is 15:1. The temperature and pressure of the charge at the charge at
the end of the suction stroke are 60°C and 1 bar. Determine the maximum pressure in
the cylinder if the index of compression is 1.32 and the specific heat at constant
volume is expressed by the expression; C, = 0.71 + 19 x 10°T kJ/kg K, where T is the
temperature in K.
Compare this value with that when constant specific heat C, 0.72 is used.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Step by step

Solved in 4 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

During a compression stroke of a cylinder in a diesel engine, the air pressure in the cylinder increases from 1.0×10^5 N/m^2 to 50×10^5 N/m^2, and the temperature increases from 26 ∘C to 517 ∘C. Determine the compression ratio for this engine. V2/V1 =?
. Exercise 2 Compute the efficiency of the cycle shown in the figure below, under the assumption that the fluid used is an ideal diatomic gas. The A → B transformation is isothermal, the B →C transformation is isochoric and the C→ A transformation is adiabatic. The compression ratio VB/VA = 3. B V
Please I request you to answer correctly without copying the answer from book as the question is different
During the compression stroke of a certain gasoline engine, the pressure increases from 1.00 atm to 19.0 atm. The process is adiabatic and the air-fuel mixture behaves as a diatomic ideal gas. (a) By what factor does the volume change? Vfinal = Vinitial (b) By what factor does the temperature change? Tinal = Tinitial Assume the compression starts with 0.016 mole of gas at 28.5°C. (c) Find the value of Q that characterizes the process. (d) Find the value of AEnt that characterizes the process. (e) Find the value of W that characterizes the process.
Consider a normally-aspirated, four-stroke, spark-ignition, 1.8 L four-cylinder engine with a compression ratio of 10. The induction system uses a single throttle body, and the diameter of the throttle body is 42 mm. The air will enter the throttle body at P₁ = 80 kPa and T₁ = 290 K. The air will be throttled from the 80 kPa ambient pressure down to P₁ = 30 kPa in the intake manifold while the engine's crankshaft speed is 4200 rpm. Model the air as an ideal gas having constant specific heat, using 300 K values from Cengel's tables posted on Canvas. a) Find the temperature of the air in the intake manifold after the air is throttled from P₁ = 80 kPa to P₁ = 30 kPa (answer: T₁ = 288.91 K). b) Find the density and mass flow rate of the air in the intake manifold (answers: P₁ = 0.3618 kg/m³ and m = 0.02533 kg/s). The volume of air in a cylinder at the start of the compression process is , which is the largest volume in a cylinder. The compression ratio, r, is the ratio of the largest…