Quite ingenious, actually, this system, which operates on the outletside only of audis brilliant new 2. Installation instructions for bailey motorsports dv30 diverter valve for audi a4 and passat b5 1. Audi valve lift system avs the audi valve lift system avs was developed to optimize the combustion charge cycle. Specifications, engine mechanicals, oil circulation system, cooling system, air circulation system, fuel system, exhaust system, engine management. Hydraulic variable valve timing testing and validation uwspace. Audi valve lift system avs on exhaust camshaft only. Variable valve lift vvl is an automotive piston engine technology which varies the height a valve opens in order to improve performance, fuel economy or emissions. An overview of the principles of the audi valvelift system can be seen in. Apr has developed an excellent entry level turbocharger upgrade for the 2. Discover audi as a brand, company and employer on our international website. Typical engine valve flow characteristics are shown in fig. Graf catalogue water pumps timing belt kit 2014 pdf. Variable valve lift vs variable valve timing vvl vs vvt. The audi s3 sportback has a total of 228 kw which combines with the latest technology.
Audi uses two versions of this innovative technology. Pdf recent developments in pm variablevalvetiming systems. Avs was introduced in the north american region with the 3. The main damping valve 3 in the piston 1 is mechanically pretensioned by a spring 4. The alignment spring on the motor will need to be engaged into the keyway slot of the new valve.
In this case, it regulates the amount of intake air by adjusting the lift in two stages for opening and closing the valves. The alignment spring on the motor will need to be engaged into the keyway slot of the new valves. Review of advancement in variable valve actuation of internal. The efficiency of the engine is improved in the operating range and in return, an increasing complexness of the mechanical design and control engineering must be handled. Audi will implement a new valvelift system for its directinjection 2. It is the area under the valve lift curve divided by that of the rectangle in which it sits and, while it can be deduced at any valve lift, normally it is determined for the valve opening duration. The audi valvelift system avs uses the cam profile switching concept cps with a high lift cam lobe 11 mm. Flexible control of valve lifting, timing and duration makes possible to. In the audi a6, the engine operates with the partial valve lift at up to 140 kmh in fifth gear, and at up to 150 kmh in sixth gear. The oil pressure in the chamber below the main damping valve 3 increases. Basic method of operation using bump as an example bump absorption.
Investigation of control system strategies for hydraulic valve. Inspiring content, interesting backgrounds and fascinating moments digital, individual and authentic. The audi valvelift system now achieves the next step variable control of the valve lift, thus influencing the crosssection of the intake duct. In internal combustion engines, variable valve timing vvt is the process of altering the timing of a valve lift event, and is often used to improve performance. Even when the v6 is running at full lift, the driver will notice one particular strength of the new technology. Download 2019 acura rdx welcome lights installation instructions 1. Valve lift with the camshaft in the low lift position left and additional lift created by the high lift profile right.
With the bailey motorsports dv30 bypass valve, we believe you have purchased the finest diverter valve currently available. Typical engine valve lift profiles of the intake and exhaust valves in the conventional camdriven valvetrain are shown in fig. The audi valvelift system enables the volume of air drawn in to. In the v6 engines, central placement of the injector in the combustion chamber is an important component of the bcycle combustion process. Current requirements and potenti als of variable valve trains variable valve trains facilitate the adjustment of the valve lift functi on to match the operati ng conditi on of the engine. For general information on the function of a twintube gasfilled shock absorber, see ssp 242. Page 1 page 2 page 3 page 4 table of contents page 5 page 6 page 7 notes on this owners manual page 8 page 9 controls page 10 page 11 controls and displays page 12 page instruments and warningindicator lamps page 14 page 15 page 16 page 17 page 18 page 19 page 20 page 21 page 22 introduction page 23 page 24 page 25 page 26 page. Due to constant product improvement changes in regulatory framework, technical specification provided herewith are subject to change without prior notice, customers are requested to contact audi. The lightduty vehicle fleet is expected to undergo.
Variable valve lift systems cost, effectiveness, and. Apr s ecu upgrade is developed to work within the oem and tier 1 supplier specifications for engine component stress tolerances and performance specifications. Avs audi valvelift system engine part acronymfinder. Page 34 2008 audi a6 quattro suspension suspension, wheels, steering fig. Narrow your results brand melling 2 autozone rewards. Variable valve timing vvt when variable valve timing is incorporated into a valvetrain system, usually a camshaft phaser is built into the sprocket to allow for the timing of the valve events to be mechanically advanced. Before installing your new exhasut system attach the oem valve motors to each valve using the supplied hardware. Experience our vision of mobility and let yourself be inspired. Audi valvelift system internal combustion engine turbocharger. Before removing the oem exhaust system you will need to unplug the electrical connectors for both exhaust control valves. Here you will find information about models and technologies.
Audi q5 tfsi e quattro with predictive operating strategy audi q5 55 tfsi e quattro phev with predictive operating strategy the audi q5 55 tfsi e quattro with 270kw 367hp system output combined fuel consumption. Air supply unit and solenoid valve block, assembly overview courtesy of volkswagen united states, inc. A solenoid 5 is situated above the valve, and the connecting cable is routed to the outside through the hollow piston rod. Check the distance of the pin tip of the cam actuator for valve lift system to the camshaft when it is not operated with a gauge.
Avec l audi valvelift system, audi invente le moteur deuxenun. The audi valvelift system enables the volume of air drawn in to be controlled to a large extent by the opening of the inlet valves. Audi india or its authorize dealers shall not be held liable for any difference in fuel consumption values, due to any of the aforesaid variables. The audi valvelift system, one of the major innovations of the brand with the four rings, regulates the lift of the valves in two stages depending on load and engine speed. Pdf the basics and historic developments of variable valve timing vvt. Audi s3 sedan engines audi sa the new audi s3 sedan. Intake and exhaust port pressure pulses at full load firing at 2000 rpm of an i6. Audi valve lifting system is another design for valve lifting which. Dynamic analysis of the audi valvelift system 2010011195 fully variable valve trains provide comprehensive means of adjustment in terms of variable valve timing and valve lift. The cylinder charge also increases considerably the engine revs up powerfully and delivers an impressive output. The intake and exhaust port pressures and the incylinder pressure are illustrated in fig. The latest version of the twolitre tfsi engine in the audi a4, a5 and q5 is equipped with the audi valvelift system that regulates the valve lift in two stages. The audi valvelift system, one of the major innovations of the brand with the four rings, regulates the lift of the valves in two stages depending on load and.
The greater the flow resistance for the oil flowing through the valves, the higher the damping force. Vag selfstudy programs ssp courtesy of volkswagen group of america, inc. Good volumetric efficiency is achieved via appropriate valve lift and valve timing designs. Download 2019 acura rdx bicycle attachment fork mount installation instructions installing the bicycle attachment 1. The measurement of the tip to the basic camshaft circle outside. Installation instructions for bailey motorsports dv30. At part load conditions, the solenoid valve can be opened.