Engine Component Description (LDC, LDD, LWD, L2I, L2N)
Cylinder Block
The cylinder hollow frame structured 4 cylinder in-line. The
block has 5 crankshaft bearings with the thrust bearing located on
the third bearing from the front of the engine.
Crankshaft
The crankshaft is a steel crankshaft. It is supported in 5 main
journals with main bearings which have oil clearance for
lubricating. The 3rd bearing of the 5 main bearing is the thrust
bearing whose the crankshaft has properly axial end play. A
harmonic damper is used to control torsional vibration.
Oil Pump
The engine is equipped with a new designed variable oil pump.
The oil pump is integrated in the engine front cover and supplies
different oil pressure values against engine speed.
Oil Pan
The oil pan is a structural aluminum oil pan with transmission
attachment. The oil suction gallery for the oil pump is integrated
in the oil pan.
Piston and Connecting Rod
The pistons are aluminum pistons. The connecting rods are made
of fractured steel. The piston pin is floating in piston bore and
shrinked in connecting rod.
Cylinder Head
This cylinder head is double over head camshaft (DOHC) type and
has 2 camshafts that open 4 valves per cylinder with hydraulic
valve lash adjusters and hydraulic valve lash adjuster arms. The
cylinder head is made of cast aluminum alloy for better strength in
hardness with light weight. The combustion chamber of the cylinder
head is designed for increasing of squish and swirl efficiency and
then this is maximized to gasoline combustion efficiency.
Camshaft Drive with Variable Camshaft Timing
A timing chain is used for camshaft drive. There is a tensioner
to control the tension of the chain. The engine is equipped with a
variable camshaft timing system. The camshaft adjuster readjust
itself against engine speed. So the valve timing is adjusted for a
low consumption, optimal power and torque.
Intake Manifold
The intake manifold is the air flow passage to the cylinder
combustion chamber through the throttle body and has an effect on
engine torque, power, noise, drivability, emission, fuel economy
and performance. It is made of plastic for better strength in
hardness with little weight. The intake manifold is equipped with
an vacuum controlled intake manifold runner system which optimizes
the air flow against load and engine speed
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