Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

1. A four-stroke cycle engine with 4.0 [1] displacement and 11-1 compression ratio produces 250 [kW] (indicated) at 6000 [rpm] running with d=1.0 on

1. c. A four-stroke cycle engine with 4.0 [1] displacement and 11-1 compression ratio produces 250 [kW] (indicated) at 6000 [ 

1. A four-stroke cycle engine with 4.0 [1] displacement and 11-1 compression ratio produces 250 [kW] (indicated) at 6000 [rpm] running with d=1.0 on gasoline (QLV = 43,000 [KJ/kg], F/Astoich = 0.0685) 2. 3. a. Assuming vol = 0.9 (use standard atmospheric conditions for the reference density) calculated the air trapped per cycle and show that the fuel delivered per cycle is 2.657 x10 [kg]. b. Calculate the net indicated efficiency. C. Calculate the net indicated efficiency and peak pressure and temperature using an ideal cycle model using constant volume heat release. Assume constant specific heat computed from k= 1.35 and R= 0.280 [kJ/kg K] and assume the exhaust and intake pressures are equal to 108 and 99.5 [kPa], respectively. d. Name three reasons why the ideal cycle efficiency is considerably higher than the measured efficiency Estimate the power of a 3.0[1] 4-stroke engine running at 6000[rpm] burning gasoline fuel (same properties as above). Assume nfc-0.3, nmech=0.95, p=1.0, vol=0.85. Calculate the ideal and actual mass flow rates for a port being tested on a flow bench with a discharge coefficient (based on limiting area) and port diameter of 0.85 and 5 [cm] respectively, when the lift and pressure drop are respectively 8 [mm] and 30" of water. Recalculate the discharge coefficient and equivalent loss coefficient (k) based on the port area.

Step by Step Solution

3.58 Rating (187 Votes )

There are 3 Steps involved in it

Step: 1

a A fourstroke cycle engine with 40 1 displacement and 111 compression ratio produces 250 kW indicated at 6000 rpm running with 010 on gasoline QLV 43000 KJkg FAstoich 00685 The net indicated power ou... blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Money Banking and Financial Markets

Authors: Stephen Cecchetti, Kermit Schoenholtz

5th edition

77536320, 77536329, 1259746747, 978-1259746741

More Books

Students also viewed these Physics questions