Answered: Question 2 The brake-specific fuel…

Question 2 The brake-specific fuel consumption of a diesel engine is 0.2 kg/kWh.If the calorific value of diesel is 40 MJ/kg, the brake thermal efficiency is a. 31% b. 28.4% c. 39.5% d. 45%

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 10RQ: True or False? SAE mandates that engine, when viewed from the front, will be rotating in a...

See similar textbooks

Related questions

Q: Figure 2 shows a horizontal beam AB. It is pin-supported at end A and carrying a load Q at end B.…

Q: What vertical load applied at the end of a horizontal rectangular cantilever beam 40mm x 25 mm, 2 m…

Q: uniform rigid mass of 2 lb is hinged at its centre and laterally supported at one end by a spring of…

A: Given:Mass of the rigid mass, m=2 lbSpring constant, k=300 N/mNatural frequency is given by, ωn2=km

Q: A 500-pound force is acting on an eye bolt as shown. Determine the moment about point B caused by…

Q: Carbon dioxide (CO₂) fills a closed, rigid tank fitted with a paddle wheel, initially at 80°F, 50…

A: Given Data The pressure of the carbon dioxide is: P=50 lbf/in2=344738 Pa The temperature is:…

Q: Under ideal conditions, if the inlet velocity is zero, the velocity of steam in m/s at the outlet…

Q: Water contained in a piston-cylinder assembly, initially at 300°F, a quality of 60%, and a volume of…

A: The given information in the problem is listed in the following attached image:

Q: Completely solve and box the final answers. Write legibly Two moles of gas (O2) initially kept in a…

Q: An object whose mass is 50 lb is projected straight upward from the surface of the earth and reaches…

A: Given: m = 50 lb h = 500 ft g = 32.2 ft/s2

Q: Determine the reactions and the force in each member of the space truss. Indicate if the members are…

Q: I need to figure out how to get the Magnitude of the Resultant Force, the elevation angle, and the…

Q: A counter-flow heat exchanger is used to cool 2200 kg/hr of oil (cp=2.5 kJ/kgK), from 100°C to 35°C…

Q: Using the rules discussed in this chapter, show the dimensions of the views shown.

A: The measurement of any object or the body in which we analyse its hieght, width and the length is…

Q: R-134a is inside of a piston-cylinder assembly that is horizontal (i.e. the piston moves…

Q: Find the length of elongation of a uniform mild steel rod length of 3 m, cross-sectional area of 150…

Q: "Fc-1486 N and and Ft 1336 N. The rake angle -7 degrees, the w-7 mm, to -0.41 mm, and r=0.3.…

Q: If WA = 40 N. Ws = 60 N. VA = 4 m/s and muy = 0.125, hnd right.

A: WA=40N WB=60N To find velocity of block A

Q: A 5-kN tensile load is applied to a test coupon made from 1.6-mm flat steel plate (E = 200 GPa, v =…

Q: The pilot of the airplane executes a vertical loop which in part follows the path of a cardioid, r =…

Q: round steel shaft rotates at 200 rpm while delivering 5000 W to a gear producing a bending moment of…

A: Given:Speed of the shaft, N=200 rpmPower of the shaft, P=5000 WBending moment, M=350 N.mAllowable…

Q: Steam, initially at 700 lbf/in.2, 550°F undergoes a polytropic process in a piston-cylinder assembly…

Q: A specifeid hole diameter of min and max has specified tolerance at LMC. A produced hole of diamter…

A: Introduction: Tolerances in mechanical engineering define the permissible variation from specified…

Q: nder ideal conditions, if the inlet velocity is zero, the velocity of steam in m/s at the outlet…

A: Given:Initial velocity, Vi=0Enthalpy drop, ∆h=427 kJ/kg

Q: A thin rod 5 mm diameter is held between two chucks 0.8 m apart and deflects 0.5mm under its static…

Q: Consider a steam pipe of length L = 20 m, inner radius r₁ = 6 cm, outer radius r₂ = 12 cm, and…

Q: Lifting cable danger. Cranes are used to lift steel beams at construction sites (Figure a). Let's…

Q: A piston-cylinder assembly contains 0.5 lb of propane. The propane expands from an initial state…

A: Given Data The mass of the propane is: m=0.5 lb The initial pressure is: p1=60 lbf/in2=8640 lbf/ft2…

Q: Refrigerant 134a expands in a piston-cylinder assembly from p₁ = 180 lb/in² and T₁ = 140°F to p2 =…

Q: 4. How far from the earth must a body be along a line toward the sun so that the gravitational pull…

Q: A room contains air at 20°c (Psat = 2.339 kPa) and 98 kPa at RH of 85%. Determine the following:…

Q: 3. Steam Source (based on former midterm problem) A piston-cylinder device with a cross-sectional…

A: Given Data: Piston cross section Area Ap = 0.021 m2 liquid droplet mass flow rate min˙=0.37 g/s…

Q: A torque of 40,000 N.m is applied to a 10 cm diameter shaft. What is the factor of safety of a…

Q: PROBLEM 2 Find the coordinates of the center of gravity for the plane object shown on the fig.…

Q: . A system is needed to be designed as damped spring mass system. Calculate the amplitude of…

Q: As shown in the figure below, a cylinder fitted with a piston is filled with 600 lb of saturated…

A: Givenm=600lbT=15oFmp=1tond=2.5 ft

Q: 9-34 The attachment shown in the figure is made of 1018 HR steel 12 mm thick. The static force is…

A: Solution: Given Data:=1 t=12 mmP=100 kNw=75 mm

Q: Five lbs of propane is contained in a closed, rigid tank initially at 80 lbf/in.², 150°F. Heat…

Q: Imagine you have an elastic band. You place the band on a table and stretch it by pulling both ends.…

A: Given question is related to solid mechanics and material science.

Q: Question 1 You are working on a design team at a small orthopaedic firm. You have been asked to…

Q: Two lbs of water vapor in a piston-cylinder assembly expands at a constant pressure of 200 lb/in²…

Q: A 42.50 kg mass has a potential energy of -35,600 joules with respect to a given datum within the…

A: Givenmass m =42.50kgE1=-35600Jpart b when g=8.65 m/s2

Q: 7. The angular velocity of the scoop is 1 rad/s CW and its angular acceleration is zero. Determine…

Q: itially at rest, makes a break for the goal. When she starts to move, you pass A so that it moves…

A: Given Data The acceleration of the alice is:a=1.5 m/s The angle is:θA=70° The initial position of…

Q: 0.2 m 0.7 m 0.6 m 0.9 m 0.4 m 0.3 m C 0.9 m B 0.6 m 0.35 m 0.4 m 0.6 m Fig. P3.59 and P3.60 3.60 The…

A: Given that: Force along CF is 33 N. It is required to determine the moment of the force along the…

Q: The 5-lb packages ride on the surface of the conveyor belt as shown in (Figure 1). The coefficient…

A: Part (A): Write the given data. vi=0vf=2 ft/st=2 sμs=0.45

Q: For mechanical system, terminals with the same displacement must be connected to: a. none of these…

A: When the mechanical system will connected with the same node, then their behavior will be equal and…

Q: 1. A system is needed to be designed as damped spring mass system. Calculate the amplitude of…

Q: etermine approximately the degrees of superheat of a steam at 150 kPa and 7.3709 kJ/(kg-K).

A: Given:Pressure, P=150 kPaSpecific entropy, s=7.3709 kJ/kg.K

Q: Determine the equivalent nodal forces for the axially distributed loading acting on the bar…

A: Solution: Given Data: bx=96-6x lb/in To Find: f1 and f2

Q: An epicyclic reduction gear shown in figure, has a shaft A fixed to arm. The arm has a pin fixed to…

Question

Question 2

The brake-specific fuel consumption of a diesel engine is 0.2 kg/kWh.If the calorific value of diesel is 40 MJ/kg, the brake thermal efficiency is

	a.	31%
	b.	28.4%
	c.	39.5%
	d.	45%

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

Similar questions

The relative efficiency of a engine will be equal to it air standard efficiency & brake thermal efficiency of engine are 53.4% & 24,4% respectively.
The brake fuel conversion efficiency of an engine is 0.3. The mechanical efficiency is 0.8. The combustion efficiency is 0.94. The heat losses to the coolant and oil are 60 kW. The fuel chemical energy entering the engine per unit time, m/QHV is 190 kW. What percentage of this energy becomes? (a) brake work; (b) friction work; (c) heat losses; (d) exhaust chemical energy; (e) exhaust sensible energy.
What is the specific brake work (kJ/kgfuel) of a 4 L single-cylinder propane engine operating stoichiometrically, if the heat transfer to the coolant is 17 kW, the air and fuel enter the engine at 298 K, the exhaust is 700 K, and the propane mass flow rate is 1.2 g/s? in hand writing please
1. Determine brake power and brake thermal efficiency of the engine. 2. Analyze the effect of increase in torque on brake thermal efficiency
True or False? SAE mandates that engine, when viewed from the front, will be rotating in a counterclockwise direction.
The friction mean effective pressure: Select one: O a. Decreases when the engine rotational speed increase O b. Increases when the engine rotational speed increase O c. No influence of rotational speed on fmep O d. Increases when the engine rotational speed decrease
An engine uses 6.5 kg of fuel per hour of calorific value 30000 kJ/ Kg. If the brake power of the engine is 22kW and mechanical efficiency is 85% , calculate it's indicated thermal efficiency and brake thermal efficiency.
Brake Specific Fuel Consumption - 0.3 kg/kwh Mechanical Efficiency- 90% Calorific Value of Fuel - 45 MJ/kg Given these values, find the indicated power, indicated thermal efficiency and brake thermal efficiency
An Engine develops a Brake Power of 439 Watts having a brake-specific fuel consumption of 0.643 kg/kW-hr . The mass flow rate of the fuel is found to be _____. Select one: a. 4.7 x 10-2 kg/ min b. 7.83 x 10-5 kg/hr c. 0.2822 kg/sec d. 0.2822 kg/hr
What is the formula and variables in finding the maximum pressure of a motorcycle?
The compression ratio and the cut-off ratio of a particular diesel engine which is running on a four-stroke cycle has a value of 11 and 3 respectively. It also has a heat rate of 12,345.6 kJ/kWh brake and the value of k is given at 1.32. Provided the following data, what are the values of the cycle efficiency, brake thermal efficiency, and brake engine efficiency?
A four-stroke, 12-cylinder diesel engine has a bore and stroke of 820 mm and 2020 mm, respectively, per cylinder. The brake mean effective pressure of each cylinder is 1.2 MPa and the engine rotates at 145 rpm. The brake thermal efficiency of the engine is 32%, the mechanical efficiency is 72% and the net calorific value of the diesel is 40.75 MJ/kg. 1. calculate the specific fuel consumption (kg/kWh) ? Answer to 3 decimal places. 2. calculate thefuel consumption (kg/h) ? Answer to 0 decimal place.