fuel consumption MITSUBISHI ECLIPSE 1990 Service Manual

GENERAL - Technical Featureso-5ENGINE
The engines are the transverse-mounted engine
especially for front-engine/front-wheeldrive orfront-engine/4-wheel drive models, the
2.OL DOHC
16-valve engine with high-performance, silent-
operation,low-vibration,low-noise,low-fuel-
consumption features, an engine that fully displays
the most
up-todate engine technology.
SPECIFICATIONS
Engine model
Displacement
cc (cu.in.1
h$xo$put (SAE net)Max. torque (SAE net)
ft.Ibs./rpm
4G63Non-Turbo1997(122)135/6000125/5000
4663Turbo1997(122)195/6000203/3000
FEATURESHigh performance and low fuel consumption
l The rocker arm reduces the valve-actuation torque as well as fuel consumption.
l Air-intake efficiency improved through the adoption of the optimum air-intake system layout.
l Improved response and fuel consumption has been achieved by electronic control multipoint
fuel injection.
l Water-cooled turbocharger.
Quiet operation
l Noise and vibration have been decreased by the adoption of roller rocker arms.
l Noise generated by the valve mechanism has been decreased by the hydraulic auto lash adjusters.
l Vibrations have been decreased by the adoption of bearing caps with beams which increase the
rigidity of the crankshaft support points.
-Serviceability
l Complete self-diagnosis functions.
l Enhanced reliability through the adoption of gold-plated connector terminals.
l Use of an auto tensioner achieves maintenance-free, automatic adjustment of timing belt
tension.
l Use of the auto lash adjusters achieves maintenance-free, automatic adjustment of valve clearance
.o The 2coil ignition system without a distributor supplies sufficient ignition energy even during
high speed operation.

REAR AXLE- Viscous Coupling Type Limited Slip Differential3-a
DIFFERENTIALROlEAM
The differential uses lower torque bearings and
lower torque oil seals to improve power perform-
ante and fuel consumption.
For faster differential cooling and higher reliability
during high speed operation, a differential carrier
with cooling fins has been adopted.For better serviceability, spacers for adjustment of
final drive gear backlash have been inserted
be-tween the side bearing outer race and gear carrier.
A speed difference responsive type viscous
cou-
pling type limited slip differential which provides
outstandingperformance during operationon a
Side gearPinion gearDifferential coverQ./\Side bearing spaceifferential case
VISCOUS COUPLING TYPE LIMITED SLIP DIFFERENTIALRWEBAAWhile the conventional mechanical type limited slip
differential uses a cam (differential pinion shaft) and
disc equipment
compo.sed of a friction plate, disc
and spring seat in limiting the differential, theviscous coupling type limited slip differential limits
the differential by use of a viscous coupling equip-
ment consisting of outer and inner plates and
silicone oil.
Front wheel
Center differential
’ (viscous coupling)Rear wheel
Limited slip differential
assembly
Front differential, I
TDifferential
Differential limiting section
(viscous coupling)11KmI66
L.-