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Mazda Ford Ranger and WL-C engine – mechanical design description

Mazda Ford Ranger and WL-C engine - mechanical design description 1
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Mazda Ford Ranger and WL-C engine - mechanical design description 2

The WL-C engine is an in-line, four-cylinder, 16-valve diesel engine with an overhead camshaft and liquid cooling. Engine capacity – 2.5 liters. The numbering of the cylinders is from the crankshaft pulley.

The WL-C engine of the new generation is designed on the basis of the previous generation WL engine and is its modification. The main distinguishing feature of the new generation engines was the use of Bosch Common Rail systems and a variable geometry of the blades on them..

Timing gear
Timing gear drive-
nizma on this engine-
toothed belt from pulley
High pressure fuel pump (high pressure fuel pump
laziness). The timing belt tension is automatically adjusted and maintained constant using a guide-
tensioner.

Mazda Ford Ranger and WL-C engine - mechanical design description 3

Mazda Ford Ranger and WL-C engine - mechanical design description 4

Cylinder head

To reduce vibration and better shu-
insulation, block head cover
cylinder made of aluminum-
vogo alloy. At the bottom of the cover
an oil separator is installed, for-
oil divisions from crankcase gases,
coming from the crankcase.
To reduce weight and improve heat-
conduction, cylinder head-
firewood made of aluminum
alloy. Gas distribution unit-
two distribution system
shafts (DOHC) (one drive shaft-
yes inlet valves and one for when
water outlet valves). There are 4 valves per engine cylinder (two inlet and two exhaust).
By increasing the number of valves
(WL and WL-T engines (turbocharged-
Mazda Ford Ranger and WL-C engine - mechanical design description 5
PTO) of previous generations, at each-
each cylinder had two valves)
an increase in area was achieved
the cross-section of the inlet and outlet channels, as a result of which an improvement in filling the cylinders with air and cleaning the cylinders was achieved.
The geometry of the inlet ports is optimally selected to reduce inlet pump losses.
Valve drive
through the rocker arms from the camshafts, which in turn are driven by the timing belt from the high pressure fuel pump pulley. The thermal clearance in the valves is regulated by adjusting screws (1) located on the rocker arms.

Mazda Ford Ranger and WL-C engine - mechanical design description 6

Camshafts are made
from cast iron. Camshafts
thioporous. In each dispenser
One shaft made one horizontal oil channel and several vertical, for the supply of engine oil to the bearings and cams of the shaft. In the front part, each camshaft has a thrust element fixing the shaft against axial movement (see the figure “Camshafts”).
Cylinder head gasket
made of layered steel. Gaskets
three dimensional groups are issued,
varying in thickness.

Connecting rods and pistons

Cranks of this engine forged from manganese steel. Mounting pins are made in the cover of the lower head of the connecting rod for proper installation of the cover. Connecting rod bearing shells are made of aluminum alloy having good anti-corrosion
ionic properties and characteristic
fatigue resistance.

Mazda Ford Ranger and WL-C engine - mechanical design description 7
Mazda Ford Ranger and WL-C engine - mechanical design description 8

Mazda Ford Ranger and WL-C engine - mechanical design description 9

The pistons of this engine are made of aluminum alloy with good heat resistance and thermal conductivity.
The combustion chamber is undivided, w – shaped, made by a groove in the piston head.
The use of a combustion chamber of this form, as well as optimization of the nozzle spray pattern, reduced the noise of the combustion process and exhaust emissions by improving the combustion process.
A special coating is applied to the piston skirt, which serves to reduce piston friction against the cylinder walls..
Cylinder block

The cylinder block is cast iron. The wall thickness of the cylinder block is reduced, and the stiffness of the cylinder block is increased by increasing its height. The cylinder block is sleeveless. In order to improve cooling and reduce oil consumption for waste in the cylinder block, cross-shaped channels are made along which
coolant circulates, also in the cylinder block there are oil channels for lubricating the crankshaft, connecting rods, pistons, oil supply to the oil nozzles and to the cylinder head.

Mazda Ford Ranger and WL-C engine - mechanical design description 10


Crankshaft

Steel crankshaft, pentas
with eight counterweights mounted on the extension of the crankshaft cheeks. Oil supply to-
The crankshaft journals are carried out from the side of the qi block.
lindrov. Supply of oil to the connecting rod
the crankshaft necks is carried out along the channels from the main necks.
On the toe of the engine crankshaft
drive gear installed
used to drive balancer
shafts and high-pressure fuel pumps (through gear system) and gas distribution mechanism.
Thrust half rings are installed
in the support of the third root neck.
Main bearing caps you
full of separate. Liners to
Wound bearings are made of aluminum alloy. Top vkl
breathing main bearings have
oil holes and grooves through
which are the supply of mas
la in the crankshaft.
On the crankshaft pulley
We have a damper and a special cover,
serving to reduce vibrations and
noise.

Cooling system

These engines use a closed-type liquid cooling system with forced circulation of coolant. The coolant pump is driven by an attachment drive belt.
Coolant pump made of aluminum alloy.

Mazda Ford Ranger and WL-C engine - mechanical design description 11

Mazda Ford Ranger and WL-C engine - mechanical design description 12

To reduce the size, the impeller of the pump is installed in the cylinder block. Coolant pump not serviced and replaced assembly.
Thermostat with bypass valve
located in the inlet pipe of the coolant in the lower part of the cylinder block and is designed to maintain the optimum temperature in the cooling system by letting the coolant in a small or large (through the radiator) cooling circle.
The thermostat housing is made of stainless steel with good anti-corrosion performance.

Lubrication system

The engine uses a system
lubricants with full-flow oil cleaning and with the supply of oil under pressure to the main moving parts and components of the engine.
Gear type oil pump.
Inside the pump housing are the leading and driven rotors with external gearing, which rotate in opposite directions. The drive is carried out from the gear mounted on the crankshaft. The oil pump has good heat resistance characteristics, reduced noise and improved stability.
The oil filter is attached to the oil cooler and is located on the left.
cylinder block. To reduce the temperature of the oil and extend the life of the engine oil, an oil cooler is installed between the cylinder block and the oil filter in the engine lubrication system. The engine oil in the oil cooler is cooled by the supplied coolant.
To cool the pistons, oil nozzles are installed at the bottom of the cylinder block.
A steel oil pan is attached to the bottom of the cylinder block with an integrated oil damper to reduce engine oil aeration..
To reduce weight, the oil receiver is made of plastic. A rubber filter element is installed inside the oil receiver.

Mazda Ford Ranger and WL-C engine - mechanical design description 13

Bushin Sergey Nikolaevich

Article
“Description of Common Rail Battery Fuel System, Intake Systems,
release and reduce engine toxicity
WL-C cars Mazda BT-50 / Ford Ranger “you can read here

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