The indicated efficiency is 67%of the corresponding ideal-air-standard Otto cycle of two-stroke SI engine with a compression ratio of 8:1 At 7590rpm, mechanical efficiency is 83.2%, and the volumetric efficiency of 88.4%. The air-fuel ratio (gravimetric, that is by mass) is 12:1 and the calorific value of the fuel is 42 MJ/kg. It has a swept volume of 756 cm³. The air is inducted at 71.5°F and 750.1torr. Determine the mass of air in kg/sec and brake power in KW.

The indicated efficiency is 67%of the corresponding ideal-air-standard Otto cycle of two-stroke SI engine with a compression ratio of 8:1 At 7590rpm, mechanical efficiency is 83.2%, and the volumetric efficiency of 88.4%. The air-fuel ratio (gravimetric, that is by mass) is 12:1 and the calorific value of the fuel is 42 MJ/kg. It has a swept volume of 756 cm³. The air is inducted at 71.5°F and 750.1torr. Determine the mass of air in kg/sec and brake power in KW.

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: An Otto cycle with the air-standard assumptions (cv=0.717 kJ/kg.K and cp/cv=1.4) has a compression…

A: “Since you have posted a question with multiple sub-parts, we will solve the first three subparts…

Q: What is the compression ratio of an Otto cycle type engine having 20% clearance . What is the air…

A: (1) Write the given data. C=20%=0.20

Q: Problem 3: An Otto cycle engine installed in a truck has a volume compression ratio of 8 and…

A: To find: a) The value of gas mileage when compression ratio is 12. b) The value of gas mileage when…

Q: A Brayton cycle with regeneration using air as the working fluid has a pressure ratio of 7. The…

Q: (b) A diesel engine has a compression ratio of 18 and a cut off ratio of 2.4. At the beginning of…

Q: In an engine working on the ideal Otto cycle, the pressure and temperature at the beginning of…

Q: A diesel engine has a compression ratio of 18 and a cut off ratio of 2.4. At the beginning of the…

Q: ) K, respectively. At th e is 2150 K. Determine a ratio.

Q: Find the unknown state properties in the table below ) Find the heat transfer and work during the…

Q: The pressure and temperature at the beginning of compression of a cold air-standard Diesel cycle are…

Q: An air-standard dual cycle has a compression ratio of 9.1 and displacement of Va= 2.2 L. At the…

Q: Air enters the compressor of an ideal gas turbine (ideal air-standard Brayton cycle) at 298 K and…

Q: An ideal Diesel cycle has the air inlet temperature and pressure of 23 0C and 92 kPa respectively.…

Q: An engine operates on the theoretical diesel cycle with a compression ratio of 14. The heat addition…

A: Diesel Cycle: Compression ratio: r= 1.4 CP=1.005 kJ/kg.K CV=0.718 kJ/kg.K R=0.287 kJ/kg.K…

Q: 1. In an air standard Otto Cycle, air enters at 104.7 kPa and 27°C. The compression ratio is 7:1. If…

Q: The pressure and temperature at the beginning of compression of an air-standard Diesel cycle are 80…

A: Given:P1=80 kPaT1=300 KP3=6821 kPaT3=2050 K

Q: A modern diesel engine operating on the dual combustion cycle with a compression ratio of 15.5/1…

A: Givenrk=15.5p=1.013barT=23oCQV=168kJ/kgQp=375kJ/kg

Q: A four-stroke and four-cylinder diesel engine with a stroke volume of 4 liters 18/1 It has an air…

Q: For Otto cycle, what is the impact of the inlet properties on its efficiency? And for real car…

A: Otto cycle is an internal combustion engine cycle. Both the heat addition and the heat rejection…

Q: 4 cylinder engine is operating with a compression ratio of 10 and maximum pressure of 50 bar. At the…

A: Given: Total volume, V1=2.5 LPressure in the beginning of compression stroke,P1=1 barTemperature at…

Q: An air-standard dual cycle has a compression ratio of 8.6 and displacement of V, = 2.2 L. At the…

A: Answer: (a) Temperature at each location are: T1 = 290 K T2 = 685.8 K T3 = 1237.21278 K T4 =…

Q: An air-standard dual cycle has a compression ratio of 8.6 and displacement of Vg= 2.2 L. At the…

Q: Required information Problem 09.112 - Brayton Cycle with Regeneration using Variable Specific Heats…

A: Given data, T-s diagram of the given Brayton cycle is Pressure ratio, rp = 7 Minimum temperature,…

Q: Q2) In an engine working on the ideal otto cycle, the the pressure and temperature at the beginning…

A: To find: The compression ratio of the otto cycle, the pressure and temperature at the end of…

Q: In an ideal Diesel cycle with an isentropic compression ratio of 18, the air is at 300 K and 100 kPa…

Q: (a) Draw the p-v diagram (b) The temperature at each state of the cycle. (c) The pressure at each…

A: DefinitionP-V Diagram:For an ideal gas, there is a graphical way of representing the relation…

Q: The temperature at the beginning of the compression process of air-standard otto cycle with a…

Q: An ideal Diesel cycle has the air inlet temperature and pressure of 22 OC and 92 kPa respectively.…

Q: Consider an ideal 4-stroke Diesel engine cycle. Air is compressed isentropically and combustion is…

Q: A four stroke engine has a compression ratio of 10.2 to 1, a displacement volume of 2.6 liters and…

A: According to the problem, the compression ratio is 10.2:1. r=10.2 Here, r is the compression ratio.

Q: The pressure and temperature at the beginning of compression of a cold air-standard Diesel cycle are…

Q: The temperature at the beginning of the compression process of an air-standard Otto cycle with a…

Q: An Otto cycle with the air-standard assumptions (cv=0.717 kJ/kg.K and cp/cv=1.4) has a compression…

Q: (a) Derive an expression for the air standard efficiency of a Brayton cycle in terms of pressure…

A: The derivation of the air standard efficiency is given below step by step.

Q: The cylinder of an Ideal Dual Combustion Cycle,, with a pressure ratio of 2, has a bore of 7 inches…

A: Givendia of cylindrical bore(D)=7inchesstroke length (L)=7.5inchesEngine speed(N)=6000rpmcompression…

Q: In an air standard diesel cycle, compression starts at 100 kPa and 303 K. The compression ratio is…

Concept explainers

IC engines

The term "engine" indicates a mechanical device/machine used to convert input energy to a specific mechanical output. The input energy may be in the form of chemical energy, thermal energy, or so on and mechanical output is in the form of mechanical energy (work done). Generally, the engines classify into two groups which are internal combustion type and external combustion type, and further, these two types can be classified into two types that are reciprocating and rotary engines.

Question

The indicated efficiency is 67%of the corresponding ideal-air-standard Otto cycle of two-stroke
SI engine with a compression ratio of 8:1 At 7590rpm, mechanical efficiency is 83.2%, and the
volumetric efficiency of 88.4%. The air-fuel ratio (gravimetric, that is by mass) is 12:1 and the
calorific value of the fuel is 42 MJ/kg. It has a swept volume of 756 cm³. The air is inducted at
71.5°F and 750.1torr. Determine the mass of air in kg/sec and brake power in KW.

Expert Solution

This question has been solved!

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

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Step 5

Trending now

This is a popular solution!

Step by step

Solved in 5 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

The pressure and temperature at the beginning of compression of a cold air-standard Diesel cycle are 90 kPa and 300 K, respectively. At the end of the heat addition, the pressure is 7.2 MPa and the temperature is 2050 K. Assume constant specific heats evaluated at 300 K. Determine: (a) the compression ratio. (b) the cutoff ratio. (c) the percent thermal efficiency of the cycle. (d) the mean effective pressure, in kPa.
QUESTION 2 (a) Using the aid of schematic and T - s diagram, explain how regeneration can improve the thermal efficiency of gas turbine working on Brayton cycle. (b) An aircraft engine operates on a simple ideal Brayton cycle with a pressure ratio of 10. Heat is added to the cycle at a rate of 500 kW; air passes through the engine at a rate of 1 kg/s; and the air at the beginning of the compression is at 70 kPa and O°C. Evaluate the power produced by this engine and its thermal efficiency. Use constant specific heat at room temperature.
Required information Problem 09.114 - Regenerative Brayton Cycle with Effectiveness using Variable Specific Heats - DEPENDENT MULTI-PART PROBLEM - ASSIGN ALL PARTS Air enters the compressor of a regenerative gas turbine engine at 310 K and 100 kPa, where it is compressed to 900 kPa and 650 K. The regenerator has an effectiveness of 78 percent, and the air enters the turbine at 1400 K. Assume variable specific heats for air. Problem 09.114.a - Regenerator Heat in a Gas-Turbine Engine Using Variable Heat Capacities For a turbine efficiency of 90 percent, determine the amount of heat transfer in the regenerator. (You must provide an answer before moving on to the next part.) The amount of heat transfer in the regenerator is kJ/kg.
An Otto cycle with the air-standard assumptions (cv=0.717 kJ/kg.K and cp/cv=1.4) has a compression ratio of 10. Before the isentropic compression process, the air is at 1xx kPa, 15°C, and 5yy cm³. The heat transfer to the air per cycle is 1zz0 kJ/kg. The angular speed of the crankshaft for the four-stroke engine is 2xx0 revolutions per minute. Determine (a) the thermal (first law) efficiency, (b) the second law efficiency, (c) the net specific power output of the cycle (in kJ/kg) (d) the mean effective pressure (MEP), (e) the horse power (hp) of the engine Note: You must draw P-V and T-s charts and mark processes to have a score Xx=04, yy=54,zz=84
The pressure and temperature at the beginning of compression of an air-standard Diesel cycle are 90 kPa and 300 K, respectively. At the end of the heat addition, the pressure is 6821 kPa and the temperature is 2150 K. Step 1 X Your answer is incorrect. Determine the compression ratio. r = i 9.64 Hint Save for Later Attempts: 1 of 3 used Submit Answer Step 2 The parts of this question must be completed in order. This part will be available when you complete the part above. Step 3 The parts of this question must be completed in order. This part will be available when you complete the part above. Step 4 The parts of this question must be completed in order. This part will be available when you complete the part above.
The compression ratio of an air-standard dual cycle is 12, and the pressure at the beginning of compression is 14.7 psia, the volume is 75 in3, and the temperature is 100 F. During the heat-addition processes, 0.4 Btu is transferred at constant volume and 1.0 Btu at constant pressure. Determine: (a) the cycle thermal efficiency (b) the pressure at the beginning of heat rejection.
An ideal, air-standard Diesel cycle has a compression ratio of 20. The maximum temperature is 2200 K while the air is 320 K and at 105 kPa before compression. Assume that specific heats vary with temperature. Select all appropriate assumptions Question 1 options: Non-ideal gas. Ideal gas Steady flow Unsteady flow Adiabatic Stationary Include of kinetic and potential energy No work Isobaric Isothermal Isochoric Isentropic Exact analysis Approximate analysis Open system Closed system Air-Standard Cold-Air-Standard
The indicated efficiency is 67%of the corresponding ideal-air-standard Otto cycle of two-stroke SI engine with a compression ratio of 8:1 At 7590rpm, mechanical efficiency is 83.2%, and the volumetric efficiency of 88.4%. The air-fuel ratio (gravimetric, that is by mass) is 12:1 and the calorific value of the fuel is 42 MJ/kg. It has a swept volume of 756 cm³. The air is inducted at 71.5°F and 750.1ltorr. Determine the overall efficiency and brake specific fuel consumption.
The pressure and temperature at the beginning of compression of an air-standard Diesel cycle are 90 kPa and 300 K, respectively. At the end of the heat addition, the pressure is 6821 kPa and the temperature is 1950 K. The Compression Ratio is 23.24 Determine the compression ratio.
A 4 stroke spark ignition engine operates on an ideal Otto cycle with a compression ratio of 8.5. This engine compresses the fresh air-fuel mixture from its initial volume to a final volume of 75cm. The air is at 101kPa and 20°C prior to the compression stroke. Temperature at the end of isentropic expansion is 750K. Make air standard assumption to solve this problem. Air properties: cp = 1.005KJ/kg.K; cy = 0.718KJ/kg.K; R = 0.287KJ/kg.K. Determine, • Mass of air in the engine (in kg). (answer to 4 decimals) (Hint: treat air as ideal gas at start of intake stroke - point 1 on P-V diagram) Isentropic Isentropic * Iout BDC TDC
An ideal Diesel cycle has the air inlet temperature and pressure of 22 0C and 92 kPa respectively. The compression ratio is 19:1 while the maximum cycle temperature is 1,101 0C. Take Specific heat at constant pressure and constant volume for air as 1.008 kJ/kg K and 0.714 kJ/kg K respectively. Calculate the cut-off ratio to three decimal places