The 1.4-ltr. 16V 55kW Engine - Volkswagen Technical Site

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Engine MechanicsThe plastic intake manifoldconsists of three component parts which are weldedtogether. The material is made of highgradepolyamide which is resistant to temperaturesof up to 140°C for short periods of time.The use of plastics has made it possible to keepthe weight of the intake manifold down to threekilograms. As a result, the intake manifold is roughly36% lighter than a comparable intake manifoldmade of aluminium.The plastic intake manifold also has a verysmooth surface, and this improves the inducedair flow.The following components are mounted in theplastic intake manifold:- the injectors,- the fuel distributor,- the throttle valve control unit and- the intake manifold pressure sender and theintake air temperature sender.The air filter housing is secured to the plasticintake manifold by two screws.The max. permissible tightening torque is3.5Nm.induced airUpper shellMiddle sectionUpper/lower parts ofintake manifoldThe plastic intake manifoldof the 1.4-ltr. engine196_071An aluminium intake manifold is used for the 1.6-ltr. 16V 88kW engine.It has been adapted to the engine’s requirements.6
Valve gearis accommodated in the cylinder head andcamshaft housing.The camshaft housing is by and largeidentical to the cylinder head coverwhich was previously used as standard.What’s new is that the camshafts arenow inserted into the housing. The bearingcovers and camshaft housing limit the axial clearanceof the camshafts.The camshafts run in three bearings.The valve assembly comprising valves, rollertypecam followers and hydraulic support elementsis located in the cylinder head.ExhaustcamshaftCamshaft housingHydraulic support elementIntakecamshaft196_018Cylinder headRoller-type cam followerBearing coverInserted camshaftCamshaft housing196_075Cylinder headThe gasket between the camshaft housing and the cylinder head is in the form of a fluid seal.Do not apply the sealant too thickly, since this may cause excess sealant to enter the oil drillingsand damage the engine.7
Page 1 and 2: The 1.4-ltr. 16V 55kW Enginewith ro
Page 3 and 4: At a glanceIntroduction . . . . . .
Page 5: Specifications1.4-ltr. 16V 55kW eng
Page 9 and 10: The lubrication systemLubricant flo
Page 11 and 12: The toothed belt driveConnecting dr
Page 13 and 14: The crankshaftis manufactured from
Page 15 and 16: Sealing flange with PTFE sealing ri
Page 17 and 18: FunctionThe inner race is seated on
Page 19 and 20: Exhaust systemThe main goals for th
Page 21 and 22: Engine ManagementMagneti Marelli 4A
Page 23 and 24: Ignition transformer N152Injectors
Page 25 and 26: The engine speed sender G28is insta
Page 27 and 28: Hall sender G40Rising edgeGeneral f
Page 29 and 30: 3015SQPG61CJ285ABDEN152J362J448V60F
Page 31 and 32: Function 03 Actuator diagnosisDurin
Page 33 and 34: Test your Knowledge1. What function
Page 35 and 36: Solutions:Page 201. a), b)2. b), c)

The 1.4-ltr. 16V 55kW Engine - Volkswagen Technical Site

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