2005 ANNUAL REPORT - Renault

Powertrains
The first Alliance diesel, best in class for performance and driving pleasure
A dynamic lineup
The new 2.0-liter dCi is offered in two versions,
with power outputs of 150hp, which has equipped
Laguna on some markets since July, and 175hp
– the benchmark on the 2.0 diesel market. The latter,
equipped with a periodic-regeneration particulate filter
and twin balancer shafts, went into production at the end
of 2005. In time, the 2.0 dCi, coupled to a new sixspeed
manual gearbox, the PK4, will equip Mégane,
Scénic, Laguna, Vel Satis, Espace and Trafic. Both
versions comply with Euro IV emission requirements.
Precise fuel injection and the treatment of polluting
emissions upstream of the exhaust outlet ensure
effective reduction of nitrogen oxides (Nox) and particulates,
while fuel economy limits CO2 emissions. Acoustic comfort
was also a design priority, as illustrated by an aluminum
bearing ladder to absorb vibrations. Finally, the 175hp
version offers the best specific power output in the category.
Euro IV emission standards
Renault has deployed a broad range of technology
allowing for full compliance with Euro IV standards,
which aim to reduce admissible emission levels for all
passenger cars and new light commercial vehicles sold
in the EU from January 1, 2006. Ceilings are set for four
types of pollutions – carbon monoxide, unburned
hydrocarbons, nitrogen oxides and particulates.
New TL4 gearbox
On the market since June 2005, the TL4 six-speed
manual gearbox is the third powertrain developed under
the Renault-Nissan Alliance. Coupled to diesel and gasoline
engines powering small to medium-size vehicles
that include Renault's Modus, Mégane II and Clio III,
as well as Nissan's Tiida, its sixth gear makes for added
driving comfort and fuel economy.
Emissions reduction in the European Union: Euro III to Euro IV
100
90
80
70
60
50
40
30
20
10
0
Carbon Hydrocarbons Nitrogen oxides
monoxide
Euro III
- 56%
Gasoline
- 50%
Euro IV
- 47%
100
90
80
70
60
50
40
30
20
10
0
In 2005, Renault unveiled
the first diesel engine
from the Renault-Nissan
Alliance.
Diesel
Carbon Hydrocarbons Nitrogen oxides
monoxide
Euro III
- 22%
- 46%
Euro IV
- 50%
Design-to-Quality methods
set the standard
Drawing on experience with projects conducted under
the Alliance, Renault has adopted the Design-to-Quality
methods developed by Nissan with a view to achieving
the highest standards of reliability and quality on all engines.
For new projects, the aim is to favor technical options
that have already proved their value for customers while
maintaining strict control of all innovations that might in any
way compromise product quality.
In the case of products already on the market, this involves
analyzing and systematically correcting all defects observed
and capitalizing on solutions. Renault applied Design-to-
Quality methods in full for the first time in the development
of the 2.0-liter dCi diesel engine and the TL4 gearbox.
The 2.0 dCi – the top diesel for performance and driving pleasure.
2005 Renault Annual Report
29