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Vw Cng Manual Ssp 373 d2

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Describe how the CNG Ecofuel system works.
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  Service Training Self-study Programme 373 EcoFuel Natural Gas Drivein Touran and Caddy Design and Function    2 Why natural gas? Driving with natural gas relieves the burden on the environment. The emissions of carbon monoxide and nitrogen oxide are reduced by over 50%. Furthermore, when natural gas is burnt, the amount of carbon dioxide produced is 20-25% less than with conventional petrol engines. Also, from an economic viewpoint, driving a natural gas vehicle is a serious alternative because of the rising petrol and diesel prices.This self-study programme describes the design and function of vehicles for natural gas operation. The petrol mode in natural gas vehicles is only slightly different to when you drive vehicles that run exclusively on petrol. S373_064 You will find basic information on the topic of natural gas in self-study programme no. 262 “Natural gas — an alternative fuel for motor vehicles”. The self-study programme shows the design and function of new developments.The contents will not be updated. For current testing, adjustment and repair instructions, refer to the relevant service literature. NEWImportantNote  3 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Vehicle population . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Service station network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Natural Gas Drive Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Touran EcoFuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Caddy EcoFuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Engine Technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 The 2.0l/80kW natural gas engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Natural Gas Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Natural gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Natural gas system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12High-pressure side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12From high pressure to low pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26Low-pressure side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32 System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34Engine Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Engine control unit J623 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36Dash panel insert . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Safety Concept . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Natural gas system safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Functional Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Touran functional diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Natural gas tank labelling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45Special tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 Test Yourself. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Contents  4 Introduction Vehicle population There are currently around 0.5 million natural gas vehicles in Europe. Italy accounts for over 430,000 of these natural gas vehicles. The Caddy and Touran EcoFuel will be launched in the following European countries in 2006:-Belgium-Denmark-Germany-Estonia-Finland-France-Greece-Italy-Latvia-Lithuania-Luxembourg-Netherlands-Austria-Poland-Portugal-Sweden-Slovakia-Slovenia-Spain-Hungary-Czech RepublicBulgaria and Rumania will follow in 2007. 6007,0009007,900400300430,00039,100800300400 S373_062 Vehicle population in Europe

Urethography

Jul 23, 2017
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