Automotive Engineering I (Monday)
Student Name: Student Class Number:
1- What are the differences between: Gasoline engine and diesel engine:
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*
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2- If the input to gear A is equal to
Ninput = NA = 4000 rpm
Tinput = TA = 150 N.m
hg = 85 %
Find:
A) The 1st gear ratio:
B) The Noutput:
C: The Poutput:
3-What are the advantages of:
A) front engine & FWD over rear engine & RWD?
B) diaphragm clutch over multi-springs clutch?
4- What do those curves represent?
And what are their units?
A: [ ]
B: [ ]
C: [ ]
5- The clutch friction plate shown has the following: r = 0.08 m , m = 0.4
If this plate will fit with a double-plate clutch with a diaphragm spring. The torque of the clutch is found to be 240 N.m. The clutch has a design factor of 1.6. Find: a- the normal force of the springs (Fn), b- the engine torque, c- the outer radius of the friction plate (ro) if the inner radius (ri) is 0.06 m. |
6- (A) The following data of a four stroke engine is known as:
Cylinder clearance volume (Vc), number of cylinders (n), cylinder volume (Vs), indicated mean effective pressure (imep), engine rpm (N), engine brake power (Pb), specific fuel consumption (SFC).
- Write down the following quantities using the above symbols:
* The engine compression ratio (r)
* The engine indicated power (Pi)
* The mechanical efficiency (hm)
B) What is the job of the clutch in the car?
C) What are the friction surfaces of the friction clutch?
D)What are the units of the following:
i) Fuel consumption:
ii) Compression ratio: