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Coolant circuit

Cover

Electronichousing

4

Injectionsystems

1

Curr ently the trend is upping uses algorgoritithmshmstoto mamananagege

Volute

inje ction pressure s, with exhaus t gagass rerecicircurculalatitionon

increased costs for stronger to preventsoosootiting anngandd E-motor and

components suchas block, incompletee cocombusmbustitionon,, housing

head, pistons and beari ngs. allowing a sisimplmplereranandd

Increased line pressure, cheaperththreree-e-wawayycacatatalylystst

morepowerful fuel pumps to be usededththatatelelimiminainatetess

and moresturdy inje ctors NOx, hydrodrocacarbrbononanandd

all add cost. Minimising CO 2. First applic ations

these developments helps by 2020.

contain costs. So, in the

longerterm, Delphi is

working on stoichiometric

diesel combustion of 14.4:1 Electric turbochargers

compared to petrol’s 14.7:1

(stoichiometric is the ratio

5

The latest electri c engine ef ficiency at low

of the grams of air requir ed AirCharger(eAC) from engine speeds, assisting

to burn one gram of fuel). Pierburg (above) uses 12v in bringing the selectiv e

To achi eve this Delphi or 48v to spin the auxiliary catalyst reduction (SCR)

turbo to maximumboost to oper ating te mper ature

within 220-230 m/secs, quicker , reducing emissions

bridging the gap normally and boosting fuel economy

associa ted with turbo lagby 3-5%. First application

caused by low engine load on a smal l capacit y diesel, in

and speed.This improves 2017-2018.

VW may have

cheated the test,

but the diesel

technology is

sound, and fast

improving

WO

RDS

IAN AD

COCK

ILLUSTRATION

AERIFORM

January 2016 |TOPCAR.CO.ZA 97