Manual download

Service Self Study Programme 223 The 1.2l and 1.4l TDI engines With Pump Injection System Design and Function Following the successful launch of Particularly in the 1.2l TDI engine developed 1.9l 4 cylinder TDI engines with unit injector specially for the Lupo 3L, numerous new system in the Golf and Passat, the trend towards technologies and production methods have been economical, low emission and simultaneously employed in order to achieve the development powerful direct injection turbodiesel engines is goal of reducing fuel consumption to 3 litres per continued in the Polo and Lupo by the 3 cylinder 100 km. This consumption figure was made TDI engine. possible by saving weight, reducing friction and improving the combustion process. By eliminating a single cylinder, the engines are now lighter, have fewer moving masses and In this Self Study Programme, you have the produce less friction than a 4 cylinder engine. opportunity to familiarise yourself with this new Despite their lower displacement, they have a engine generation, which is exemplified by the high performance potential for this vehicle class. 1.2l and 1.4l TDI engines. 223 213 New Important Note The Self Study Programme describes the design and the Please always refer to the relevant Service Literature function of new developments The contents are not updated for all inspection, adjustment and repair instructions. Literature. 2 Contents Introduction .4 Engine mechanicals . .8 Unit injector system .27 Fuel supply . .38 Exhaust system .43 Engine management . .46 Function diagram .70 Starter motor .72 Engine management special features of the Lupo 3L .76 Service . .79 Test your knowledge .85 3 Introduction Installation variants The 1.2l TDI engine is combined with the DS 085 electronic manual gearbox and is fitted exclusively in the Lupo 3L. 223 214 223 138 223 215 The 1.4l TDI engine is combined with 5 spe