valvetronic engine technology - IFET College of Engineering

the most advanced direct-injection petrolengines without the same compromisesin terms of emissions. Accordingly, the316ti is able to do without the elaborateand so far hardly reliable emissionmanagement technologies still requiredtoday on a direct-injection petrol engine.And it does not require sulfur-free fuellike a direct-injection petrol engine,achieving its superior fuel economy withproven l =1 technology, which allowsthe Valvetronic engine to run on allcommercially available grades of regularpetrol. In other words, the customerenjoys all the consumption-relatedadvantages of Valvetronic also whendriving in countries without anationwide supply of sulfur-free fuel.The consumption figures for the 316tinevertheless relate to the use of premiumfuel with an octane rating of 95 RON.Together with its 63-liter (13.9 Imp gal)fuel tank, the 316ti offers a much longerrange than its predecessor, with extraurbanfuel consumption in the EuropeanEU test cycle of just 5.3 liters for 100kilometers (53.3 Imp gals). This meansthat the driver would only have to refuelafter a very significant 1,188 kilometersor 737 miles.Other AdvantagesAnti-knock control for runningon all fuel grades between 87 and99 octane.Maintenance-free ignition systemwith individual coils. Maintenance-free valve drivewith hydraulic valve playcompensation.A Service Interval Indicator tokeep the cost of service to aminimum A two-mass flywheel formaximum running smoothnessValve drive with roller bearingsthroughout in the interest ofminimum friction and fuelconsumption. Advanced catalysts near theengine in special manifold designfor minimum emissions.In Valvetronic engines coolantflows across the head, resultingin a temperature reduction of60%.The water pump size is cut inhalf, reducing powerconsumption by 60%.The power steering fluid iswarmed quickly, reducing the