CIS Assignment 2015(1).pdf -NDSU-North Dakota State.. x Assignments-PHYS 2110 LO

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CIS Assignment 2015(1).pdf -NDSU-North Dakota State.. x Assignments-PHYS 2110 LON CAPA Fuel Injection e The Blood Flow Rate Throu × x Q Search | triton physics.ndsunodak.edu/res/ndsu/demmelash/Giordano/Chap10/Prob1082 problem?symbe uploaded%2fndsu%2f2q14584fcddc855 Makenzie Marie Reutter (Student - section: 1) Main Menu Contents Grades Physics 211 - College Physics I Fall 2015 Messages Courses Help Logout Course Contents ».. »Homework 13 » Fuel Injection (5 Timer Notes Evaluate & ,Feedback Print Info Before Fuel Injection. Some automobile engines (mainly older ones) use a carburetor to turn the liquid fuel into vapor and mix it with air for combustion. The basic principle of carburetion is shown in Figure P10.82. A piston moves down in the cylinder thereby moving air from the outside through the carburetor by way of an air filter and into the carburetor. The filtered air enters from the left of Figre P10.82 and moves Pm into the main intake, a tube of diameter 6 cm, with velocity v = 9.8 m/s. The air must pass through a region of the intake that has a smaller diameter. Determine what diameter would be needed cause a change in pressure such that fuel from the reservoir is pulled into the airflow. The surface of the fuel in the reservoir is h = 47 cm below the bottom of the intake and the density of the fuel is 0.63 that of water. Use 1000 kg/m 3 for the density of water and 1.29 kg/m 3 for the density of air To combustion chamber Fuel (gasoline) Submit Answer Tries 0/5 Post Discussion Send Feedback 111 li 16 10:23 AM 12/2/2015

Explanation / Answer

  Pressure under a column of fluid = density x g x height
Calculate absolute pressure of suction required to lift fuel [= 1 atm - density x g x height]
Use Bernoulli's equation to find out what V goes with that pressure

Assume perfect gas or incompressbile flow [or low enough pressure changes so as to not affect density]
Conserving air gives cross sectional area x velocity = constant

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