3.1. Petrol Engine (PE)

Engine with a working volume of 2,2 l
1. Double roller chain
2. Cover of filling with oil
3. Cover of a head of cylinders
4. Head of cylinders
5. Piston
6. Flywheel
7. Cylinder
8. Flywheel 		9. Oil filter
10. Hydraulic coupling
11. Fan
12. Crankshaft pulley
13. Chain of the drive of the oil pump
14. Oil pump
15. Oil pallet
16. Bent shaft

1. Cover of a head of cylinders
2. Cover of wires of ignition
3. Inlet cam-shaft
4. The soaking-up collector
5. Injection valve
6. Rod
7. Crankshaft
8. Oil pump
9. Bolt of a masloslivny opening 		10. Hydraulic dish-shaped pusher
11. Masloizmeritelny probe
12. Final valve
13. Final collector
14. Piston
15. The directing pipe of the masloizmeritelny probe
16. Oil pallet

In the Mercedes C-class model stand line, 4-or 6-cylinder engines.

In the motor block from gray cast iron openings of working cylinders are turned. In the presence on their walls of zadir or рисок they can be chiseled in a specialized workshop. Therefore pistons have to be installed in working cylinders with a tightness. In the bottom of the motor block the bent shaft which is fixed in 5 and 7 bearings of the crankshaft is located. By means of the sliding bearing the rods putting pistons in action are connected with a bent shaft. From below the engine the oil pallet is attached, – in it the engine oil demanded for lubricant and cooling gathers. From above to the motor block the head of cylinders made of aluminum which has good heat conduction and much easier than gray cast iron fastens. The head of cylinders is made by the principle of a cross stream. That is fuel-air mix enters on one party of a head of cylinders while hot gases are pushed out from the opposite side. Thanks to the principle of a cross stream the best gas exchange is carried out. In a head of cylinders there are two camshafts: one for inlet, and another for final valves. Four valves are directly given from a cam-shaft through dish-shaped pushers. Hydraulic dish-shaped pushers provide automatically uniform gap of valves under any service conditions thanks to what adjustment of gaps of valves within servicing is not required.

Lubricant of the engine is provided by the oil pump. It is strengthened ahead on the block of cylinders and is given by means of an additional roller chain. The oil which is sucked in from the oil pallet through openings and channels reaches bearings of the crankshaft and cam-shafts, and also the working surfaces of cylinders.

The pump of cooling liquid at 4-cylinder engines is fixed ahead on the motor block, and at 6-cylinder – sideways the motor block. The pump is given from a ridge maple belt which in addition gives the generator and the pump of steering. Keep in mind that the contour of the cooling system has to be filled annually with fresh mix of antifreeze and anticorrosive means on the basis of the decalcified water.

For preparation of flammable fuel-air mix the operated device of injection and ignition which practically does not demand leaving serves completely electronically.
 
Engine model
C180
C200
C220
C280
The beginning of release with
6/93
1/94
6/93
6/93
Type
202.018
202.020
202.022
202.028
Engine
111.920
111.941
111.961
104.941
Working volume of cylinders, cm3
1799
1998
2199
2799
Power,
kW at rpm.
h.p. at rpm.

90/5500
122/5500

100/5500
135/5500

110/5500
150/5500

142/5000
193/5000
Torque, N. of m at rpm.
170/4200
190/4000
210/4000
270/3750
Diameter of the cylinder, mm
85,3
89,9
89,9
98,9
Piston stroke, mm
78,7
78,7
86,6
73,5
Extent of compression
9,8
9,6
9,8
9,8
Number of cylinders
4
4
4
6
Injection / Ignition
PMS
PMS
HFM
HFM
Operating procedure of cylinders
1–3–4–2
1–3–4–2
1–3–4–2
1–5–3–6–2–4
Fuel / ROZ without the content of lead
Super/95
Super/95
Super/95
Super/95
Filling capacities:
  – engine oil (with the filter), l
5,8
5,8
5,8
7,5
  – cooling liquid, l
8,0
8,0
8,0
10,0