The engine is YaMZ-238 DE2. assembled
Warranty 12 months;
Note: without oil.
Main parameters and characteristics
YaMZ-238DE
engine's type
Four-stroke with compression and turbocharging
Number of cylinders
8
Cylinder arrangement
V-shaped, camber corner 90º
Operation of the cylinders
1-5-4-2-6-3-7-8
Direction of rotation of the crankshaft
Right
Diameter of the cylinder, mm
130
Piston stroke, mm
140
Working volume, l
14.86
Compression ratio
16.5
Rated power, kW (hp)
243 (330)
Crankshaft speed at rated power, min-1
2100 + 50-20
The maximum twisting moment, Nm (kgf ּ m)
1225 (125)
Rotational speed at the maximum torque, min-1
1200-1400
Idle speed, min:
maximum, not more than
minimal
2275
600 ± 50
Specific fuel consumption by the speed characteristic, g / kW ּ h (g / hp ּ h):
minimum
206.7 (152)
at rated power
227 (167)
Specific consumption of oil for carbon monoxide in% to fuel consumption, no more than
0.5
Method of mixture formation
Direct Injection
The combustion chamber
Unshared type in piston
Camshaft
One for both rows of cylinders with gear drive
Gas distribution phases:
Inlet Valves
Opening, hail, up to ВМТ
20
Closure, hail, after HMT
40
Exhaust Valves
opening, hail, to HMT
66
closing, hail, after TDC
20
Number of valves per cylinder
One intake and one outlet
Thermal clearances of valves on the cold engine, mm
0.25-0.30
Lubrication system
Mixed, with cooling oil in a liquid-oil heat exchanger:
under pressure, the bearings of the crankshaft, camshaft, pushers, rocker arms, spherical surfaces of the rod pushers, high pressure fuel pump, turbocharger are lubricated. The remaining friction surfaces are lubricated by spraying.
Gear type, single-section
Oil pressure on the warmed-up engine in the block's main line, kPa (kgf / cm2):
At rated speed
400 - 70 80 (4-7)
At minimum speed, not less than
80 (0.8)
Oil filters
Two: a full-flow cleaning filter with a filter element and a centrifugal filter
Oil cooling system
With a liquid-oil heat exchanger, which is mounted on the engine block of the engine on the left
Pressure of oil of opening of valves of system of greasing, кПа (кгс / см2):
oil pump pressure relief valve
700-800 (7.0-8.0)
differential valve
490-520 (4.9-5.2)
oil filter bypass valve
200-250 (2.0-2.5)
Fuel supply system
Shared type
High-pressure fuel pump (HP pump) with regulator and fuel feed pump
Eight-section, plunger, plunger spool type:
- plunger diameter 10 mm, plunger stroke 11 mm - YaMZ-238BE, YAMZ-238DE;
- plunger diameter 12 mm, plunger stroke 14 mm - YAMZ238BE2, YAMZ-238 DE2
Model of injection pump
806.1111005-50
(238 DEU-2)
806.1111006-50
(238 DE-1, -5, -10, -11)
Operation of fuel pump sections
1-3-6-2-4-5-7-8
Speed regulator
Centrifugal, all-mode
Fuel feed pump
Reciprocating with manual fuel pump
Injectors
Closed type with multi-sprinkler:
- 261.1112010-11 on the engines YAMZ-238BE, YAMZ-23 8DE;
- 267.1112010-02 or 204.1112010-50.01 on engines YAMZ-238BE2, YAMZ-238DE2
with common cylinder heads;
- 51.1112010-01 on engines YAMZ-238DE2 with individual heads
The pressure of the injection of the injector, MPa (kgf / cm2)
20.6 + 0.8 (210 + 8) -261.1112010-11
26.5 + 0.8 (270 + 8) - 267.1112010-02 and 26.5 + 1.2 (270 + 12) - 204.1112010-50.01
26.5 + 1.2 (270 + 12) -51.1112010-01
Steering angle of fuel injection advance
It is established on marks on a flywheel and the case ТНВД and makes:
13 ° ± 1 - on the engines YAMZ-238BE, YAMZ-238DE;
6 ° ± 1 - on engines YAMZ-238BE2, YAMZ-238DE2 with common heads;
8 ° ± 1 - on engines YAMZ-23 8DE2 with individual heads
Fuel filters:
coarse cleaning
With a replaceable element (YMZ-23 8E, DE), a settling tank (YMZ-23 8EB2, DE2).
fine cleaning
With replaceable filter element.
Puffing system
Gas turbine, with one turbocharger, with radial centripetal
turbine and centrifugal compressor
Turbocharger (TCR)
Model 122 or TKR 100 *
Boost pressure (excess) at the rated operating mode, kPa (kgf / cm2)
110 (1.10)
Cooling system
Liquid, closed type, with forced circulation of coolant. Equipped with a thermostatic device for automatically maintaining the thermal mode of the engine.
Water pump
Centrifugal type, with belt drive
Fan
6-blade, with gear drive and fan clutch
Liquid-oil heat exchanger
Plate or tubular type. Equipped with a tap or plug for draining the coolant
* -turbocompressor by design is similar to TKR model 122
Thermostats
With a solid filling, the opening temperature is 80 ° C.
Electrical equipment