Mitsubishi 2000 Annual Report Download - page 23

Powers the Pajero iO 5-door Turbo model launched in July
2000.
●GDI+HEV: Hybrid power system
GDI+CVT
Integrated powertrain management of the high-precision con-
trol of engine torque, the wide low-consumption operating
band inherent to the GDI engine, and the CVT's automatic
and continuous matching of gear ratio to engine torque re-
quirements and driving conditions realizes a substantial re-
duction in energy losses. The result is a 10% improvement in
fuel economy in the Japanese 10-15 urban driving pattern
and superior response and silky-smooth shifting over a GDI
engine and conventional automatic transmission powertrain.
MMC will be phasing this eco- and driver-friendly power-
train into more of its models, both for domestic and export
markets.
GDI+ASG
In December 1999, MMC began sales of a new limited series
Pistachio model powered by the GDI+ASG (Automatic Stop
& Go) component system to local authorities and public cor-
porations that are at the forefront in efforts to conserve the
environment. The Pistachio became the first gasoline-fuelled
liter-car to return 30 km/l in the Japanese 10-15 mode urban
driving pattern.
The GDI engine requires less fuel to start than conven-
tional engines and always starts at the first turn of the key. In
addition, the use of high-precision start time control results
in a major reduction in the time taken from delivery of fuel
to generation of the torque required to move off. GDI+ASG
thereby realizes a dramatic improvement in fuel consump-
tion, as well as effortless driveability.
GDI+Turbo
The GDI engine allows more low-end torque to be generated
while using high compression ratios. When mated with
Mitsubishi's advanced turbocharger, this quality prevents a
deterioration in fuel consumption and, because supercharg-
ing increases the amount of air introduced into the cylinder,
makes leanburn operation possible at higher engine loads −
thereby widening the low-consumption band. MMC
launched the Pajero iO 5-door Turbo model driven by the
GDI+Turbo powertrain in July.
GDI+HEV
Comprising a gasoline generator engine and electric motor,
the hybrid system is an outstanding low-consumption tech-
nology that exploits the most efficient operating bands of
two different sources of motive power.
The GDI engine starts significantly faster than conven-
tional engines. This enables a dramatic reduction in the time
electric motor torque is required to crank the engine as well
as excellent acceleration from rest using a less powerful mo-
tor and smaller batteries. Further, because the GDI engine
generates minimal torque on starting and torque step is mini-
mal, any jerkiness accompanying intermittent engine opera-
tion is minimized.
In addition, because the GDI engine realizes outstanding
fuel efficiency in low-load operation, it returns superior fuel
economy when operating to generate electrical power.
GDI+HEV utilizes these qualities of the GDI engine to maxi-
mum advantage, and combined with Mitsubishi's integrated
management GDI+CVT powertrain realizes a superior hy-
brid power system. The company is planning to launch a
GDI+HEV model in the near future.
Environmental stewardship & technology
21
Pistachio -with GDI+ASG powertrain