PURETECH ENGINES
PureTech engines provide increased power with lower fuel
consumption and emissions by adopting a smaller and lighter
three cylinder conguration constructed of pressure-cast
aluminium. In conjunction with low friction component
coatings, improved air and fuel ow and optimised
combustion, this allows engines to offer more power, better
fuel economy and signicantly lower CO
2
emissions.
ANTI-LOCK BRAKING SYSTEM (ABS)
Computer-controlled braking assistance designed to prevent the
wheels from locking under extreme braking. This enables the car
to continue being steered and therefore controlled during this
braking incident. Citroën C4 New Range’s ABS system is further
enhanced with EBA and EBD.
EMERGENCY BRAKING ASSISTANCE (EBA)
As drivers we nd it difcult to instinctively brake very hard, but
this is often what is needed in those rare emergency situations.
The EBA system recognises our ‘attempt’ to brake hard and in
combination with the ABS and EBD systems instantly applies
the maximum stopping power possible.
ELECTRONIC BRAKEFORCE DISTRIBUTION (EBD)
A conventional ABS system cannot account for any of the
four wheels wanting to lock more quickly than the others
(for example, two of the wheels may be on snow and two
on tarmac). EBD reads the deceleration rate of each wheel
individually and applies the braking effort accordingly.
ELECTRONIC STABILITY CONTROL (ESC)
This is computer-controlled traction assistance and is provided
primarily through the braking systems. The ESC’s control unit
constantly compares where the driver intends to go (through
the position of the steering wheel) with where the vehicle is
actually going and, if necessary, makes speed corrections to
each wheel individually through braking or engine torque to
keep the vehicle under control.
ON-BOARD TRIP COMPUTER
Citroën C4 New Range
’s multi-function on-board trip computer
provides you with information at your ngertips. At the touch of
a button you can view a range of data like fuel consumption,
average speed and mileage possible at your current fuel level.
FRONT SEAT BELT PRE-TENSIONERS
In the event of a crash, a pre-tensioner will tighten the seat belt
almost instantaneously. This reduces the load on the occupant
in a violent crash. Like airbags, pre-tensioners are triggered by
sensors in the car’s body, and use explosively expanding gas to
drive a piston that retracts the belt. Seat belt pre-tensioners also
lower the risk of “submarining”, which is when a passenger slides
forward under a loosely worn seat belt.
ISOFIX
A standardised and more simple method for installing
child seats, each seat is ‘clicked’ into place via a three point
system. On the Citroën C4 New Range, Isox is installed on the
outer rear seats.
GLOSSARY
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