A four-cylinder, four-stroke, 1.6-L gasoline engine operates on the Otto cycle with a compression ratio of 11. The air is at 100 kPa and 37°C at the beginning of the compression process, and the maximum pressure in the cycle is 8 MPa. The compression and expansion processes may be modeled as polytropic with a polytropic constant of 1.3. Using constant specific heats at 850 K, determine the specific fuel consumption, in g/kWh, defined as the ratio of the mass of the fuel consumed to the net work produced. The air– fuel ratio, defined as the amount of air divided by the amount of fuel intake, is 16.

Q: Consider a regenerative gas-turbine power plant with two stages of compression and two stages of…

A: The given data and the t-s diagram is shown in the following attached image:

Q: The maximum temperature that can be reached in a dual-combustion cycle is 2000°C, and the pressure…

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Q: Figure 1 shows a regenerative gas turbine power plant. Air enters the compressor with a mass flow…

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Q: In an Otto cycle, the air at the beginning of the isentropic compression is at 1 bar and the volume…

A: Option A is the correct answer   given P1=1bar v1=vc+vs =0.54Lvs=0.48Lvc=0.54-0.48=…

Q: A turbine, with isentropic efficiency 65% has a pressure ratio of 6. At the intake, air is at a…

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Q: Answer true (T) or false (F) as appropriate 1. Entropy is a measure of irreversibilities in…

A: 1. TRUE; entropy is a measure of degree of randomness or irreversibilities in processes. 2.FALSE;…

Q: Consider a modification of the cold air-standard Otto cycle in which the isentropic compression and…

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Q: At the commencement of the compression stroke, the cylinder of an oil engine is charged with air at…

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Q: The thermal efficiency of a Carnot cycle operating between 15oC and 150oC is:     90%     22%…

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Q: From a combustion point of view, how does a diesel engine differ from a gasoline engine?

A: The injection and combustion processes are the primary differences between a diesel engine and a…

Q: with a mass flow rate of 70 lb/s at 9 lbf/in2, 420°R, and a velocity of 750 ft/s. The pressure ratio…

A: To given thatMass flow rate,m˙=70lb/spressure,P=70lbf/in2Temperature, T=420°RVelocity…

Q: In a Diesel cycle, the air at the beginning of the isentropic compression is at 1 bar and the volume…

A: GIVEN:- P1=1barV1=0.85m3V2=0.78m3T2=690KP4=2.32bar (Pressure at the end of expansion…

Q: volume of 0.004 m3 at 27 o C and 101 kPa. If the displacement volume is 0.0035 m3 and the heat…

A: Given that ,  V1=0.004m3T1=27°CP1=101kPaVs=0.0035m3

Q: Consider an air-standard Otto cycle. At the beginning of the compression process, the pressure and…

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Q: Consider a regenerative gas-turbine power plant with two stages of compression and two stages of…

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Q: A gasoline engine receives air at 10C 100 kPa, having a compression ratio of 9:1 by volume. The heat…

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Q: Air enters the diffuser of a turbojet engine with a mass flow rate of 65 lb/s at 9 lbf/in2, 420°R,…

A: Given data  mass flow rate =65 lb/s velocity =750 ft/s compression ratio =12 Calculations Energy…

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.