Q2: A spark ignition engine has a swept volume of 2.0 liters, and operates on the four-stroke cycle. When installed in the Rover vehicle, the operating point for a vehicle speed of 120 km/h corresponds to 3669 rpm, and a torque of 71.85 N.m, for which the specific fuel consumption is 298 g/kWh. Calculate the bmep at this operating point, the arbitrary overall efficiency and the fuel economy (liters/100km). If the air fuel ratio is 20:1, calculate the volumetric efficiency of the engine. The calorific (heating) value of the fuel is 43 MJ/kg, and its density is 795 kg/m.

Q2: A spark ignition engine has a swept volume of 2.0 liters, and operates on the four-stroke cycle. When installed in the Rover vehicle, the operating point for a vehicle speed of 120 km/h corresponds to 3669 rpm, and a torque of 71.85 N.m, for which the specific fuel consumption is 298 g/kWh. Calculate the bmep at this operating point, the arbitrary overall efficiency and the fuel economy (liters/100km). If the air fuel ratio is 20:1, calculate the volumetric efficiency of the engine. The calorific (heating) value of the fuel is 43 MJ/kg, and its density is 795 kg/m.

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

Similar questions

The figure below shows a turbine-driven pump that provides water to a mixing chamber located dz⁢= 5 m higher than the pump, where m˙=50 kg/s. Steady-state operating data for the turbine and pump are labeled on the figure. Heat transfer from the water to its surroundings occurs at a rate of 2 kW. For the turbine, heat transfer with the surroundings and potential energy effects are negligible. Kinetic energy effects at all numbered states can be ignored. Determine:(a) the magnitude of the pump power, in kW.(b) the mass flow rate of steam, in kg/s, that flows through the turbine.
For a heat engine, if QH = 600.00 kJ, and QL = 350.00 kJ, then thermal efficiency is _____________%
A steam power plant operates in cycle as shown.The rating of the power cycle is 100,000 kW. Determine the m, Qh, Qc and n of the plant.
A 45 MW thermal power plant, which receives 80 MW of heat from a thermal source of 440 ℃ terk, leaves the heat to the 18 river next to it. What will be the real thermal efficiency of a thermal power plant?
You have invented a hydrogen‐fueled turbine engine that operates between a combustion temperature of 2500. K and an exhaust manifold temperature of 500. K. How much work does it produce per kilojoule of fuel energy if it operates at 75% of maximum theoretical efficiency?
A turbine is driven by a system that enters the turbine at the ff. conditions: 200 kg/h, 39 atm, 501 deg C, 49 m/s linear speed. The steam exits at a point 8 meters below the inlet stream of the turbine with the following conditions: atmospheric pressure, 290 m/s speed. 69000 W of shft work is delivered by the turbine while 100 kcal/h heat is lost. What is the value of (a) expansion work and (b) flow work? If the value is zero, explain why is it so.If it cannot be calculated, explain why.
A tidal power plant of single basin type, has a basin area of 25 x 10 to power 6 m2. The tide has a range of 10m. The turbine however, stops operating when the head on it falls below 2 m. Calculate the energy generated in one filling process, in KWh if the turbine generator efficiency is 75%. (Density of sea water = 1025 kg/m2)
Energy balance results (in kW) obtained for the same medium speed single cylinder diesel engine are reported in the following table. For case 1, if the coolant temperature is 105 °C at the outlet of the engine and the volumetric flow rate is 0.22*10-3 m3/s, the temperature of the coolant at the inlet is (in °C): (The coolant is considered water with a density 999 kg/m3 and a specific heat 4.2 k/kg.K). Case N (rpm) bmep (bar) W. O ambient Q ahast shaft 2.2 4.2 19.1 60.3 9.90 3.52 1 500 7.1 24.5 23.8 500 6.1 3.6 5.2 400 3.50 4.9 4.1 1.4 Select one: O a. 142.1 O b. 112.7 O c. 97.31 O d. 87.2 O e. 370.31
A two stage compressor with first stage piston displacement of 94,390 cu.m/sec is driven by a motor. Motor output is 35 HP, suction temperature 22 degC, volumetric efficiency is 85%, mechanical efficiency is 95%, the intercooler pressure is 30 psi gage. Air temperature in and out of the intercooler are 105deg C and 44 degC, respectively. Final discharge pressure is 100 psi gage, while suctionis estimated to be 14.4 psi. Determine the compression efficiency.
os/ A 1.6m’ tank is filled with air ata pressure of § bar and a temperature of 100°C, The air is then let off to the atmosphere through a valve. Assuming no heat transfer, determine the work obtainable by utilizing the kinctic energy of the discharge air to run a frctionless turbine. Take : Atmospheric pressure = | bar ; ¢, for air = 1 Kikg K : ¢, for air = 0.711 KkgK.
HANDWRITTEN and with given, required and solution. Engr. Darmis is tasked to design a frictionless and constant temperature steady-flow system that will be used for power generation using Nitrogen as its working fluid. The initial gage pressure is 110 pounds per square inch and the final volume is 170 cubic feet. If ninety-one pound-mass of the fluid gain 3.253 BTU/R of entropy per minute. Find the (a) initial volume, (b) temperature, and (c) Work. (d) If the heat is equal to 9940 BTU, how long did the process took place?
(4 blanks) An ice-making machine operates in a Carnot cycle. It takes heat from water at 0.0 oC and rejects heat to a room at 24.0 oC. Suppose that 85.0 kg of water at 0.0 oC are converted to ice at 0.0 oC. How much energy (in Joules) must be supplied to the machine to achieve this task?