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Topic: Valvetronic

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	BMW World - Technology
		Valvetronic was introduced on the all-alloy 1.8-liter, 4-cylinder engine for the E46 316ti Compact, and it will subsequently be applied to most eight and 12-cylinder engines within a few years.
		Valvetronic has its own computer housed in a separate unit away from the engine management system, networked with the digital engine management system incorporating a 40-megahertz, 32-bit computer.
		Valvetronic is an important element in BMW's aim of meeting the 2008 carbon dioxide fleet requirements of 140 gm/km.
	www.bmwworld.com /technology/valvetronic.htm (767 words)

	BMW World - Valvetronic
		Depending on the position of the Valvetronic control system, the lever converts the cam contour into a larger or smaller valve lift, whatever may be required.
		Valvetronic offers the customer direct, immediate benefits, with fuel consumption and exhaust emissions decreasing, but dynamic performance and the spontaneous response of the engine improving accordingly.
		Another significant advantage of Valvetronic highly beneficial to the customer is that a Valvetronic engine offers at least the same fuel economy as the most advanced direct-injection petrol engines without the same compromises in terms of emissions.
	www.bmwworld.com /engines/valvetronic.htm (1374 words)

	Valvetronic BMW Technik (Site not responding. Last check: 2007-10-15)
		Valvetronic.Die Valvetronic (= variable Ventile und Elektronik) ist ein Ventiltrieb mit vollvariabler Hubsteuerung der Einlassventile (Hub von 0 bis 9,7 mm).
		Die Motorleistung wird dabei ohne die für Ottomotoren bislang obligatorische Drosselklappe über einen stufenlos verstellbaren Einlassventilhub gesteuert, der die Luftmenge mit deutlich verringerter Verlustleistung reguliert (Quantitätsregelung).
		Für den BMW Fahrer bedeutet die Valvetronic Technologie einen geringeren Verbrauch, verminderte Abgasemissionen und zugleich ein besseres Ansprechverhalten sowie eine höhere Laufruhe des Motors.
	www.encyclopedia-wiki.org /encyclopedias/bmw-technik-lexikon/Valvetronic.htm (71 words)

	AutoSpeed - BMW's Valvetronic!
		Featured in the brand new BMW 3-series, the 1.8-litre Valvetronic engine (the first of a new family of Valvetronic designs) mixes both unusual mechanical construction with the sensational new roller bearing valve control system.
		The Valvetronic system is based on BMW's established double VANOS system, which steplessly varies the timing of both the inlet and exhaust cams.
		However, the Valvetronic system adds variable valve lift to the inlet cam, achieved by the use of a lever positioned between the camshaft and the inlet valves.
	www.autospeed.com /A_1083/page1.html (755 words)

	BMW: BMW 3 Compact 4 Cylinder Engine
		This is done by a lever positioned between the camshaft and the intake valves, its distance from the camshaft being adjusted infinitely by an additional eccentric shaft operated by an electric motor.
		Depending on the position of the VALVETRONIC control system, the lever converts the cam contour into a larger or smaller valve lift, whatever may be required.
		This eliminates the usual time lag between the process of "giving gas" and the actual acceleration of the car, which used to be inevitable due to the need to fill the intake manifold between the throttle butterfly and the combustion chamber.
	www.autointell.com /european_companies/BMW/bmw-3-compact/bmw-3-compact_engine.htm (1473 words)

	Bomboncito Magazine - Estreno en Ginebra: BMW CS1 (Site not responding. Last check: 2007-10-15)
		El sistema Valvetronic tiene un árbol de levas convencional, pero también emplea un excéntrico secundario con una serie de palancas y rodillos activados por un motor paso a paso.
		Valvetronic tiene su propia computadora ubicada en un compartimiento distinto del que ocupa el sistema digital de mantenimiento del motor (DEMS), con el que está conectado en red incorporando un procesador de 32 bits y 40 MHz.
		En los motores Valvetronic el refrigerante fluye a través de la cabeza del cilindro, lo que resulta en una reducción de temperatura del 60%.
	www.bomboncitomagazine.com /articulos/300.php (664 words)

	Newswatch magazine (Site not responding. Last check: 2007-10-15)
		The active cruise control system allows the driver "to maintain a pre-selected speed on the road, and also monitors the distance between the car and the vehicle ahead of it by means of radar sensors." The adaptive headlight swivels to illuminate a both sides of the road when the car is negotiating a bend.
		The new BMW 6 series coupe is powered by a 4.4 litre V8 valvetronic engine that can peak to 100 km/h in less than 6 seconds.
		Valvetronic enhances a high engine output at a low fuel consumption rate.
	www.newswatchngr.com /editorial/allaccess/business/10221104936.htm (467 words)

	AutoGhid.ro - Ghidul tau auto (Site not responding. Last check: 2007-10-15)
		Exclusiv BMW, tehnologia Valvetronic ce serveste ca dotare standard pentru valvele de 12 cilindri, ofera specialistilor un instrument ideal pentru controlul acestui ciclu cu solicitare de combustibil.
		Valvetronic nu controleaza numai durata miscarii valvei, ci si ridicarea actualei valve.
		Valvetronic are la baza procedeul BMW de ajustare a axului.
	www.autoghid.ro /viewSitePage.do?pageid=119&categoryid=1 (460 words)

	New Tech - BMW's new Powertrain
		Like the 2.0-litre Valvetronic engine about to go on sale in the new BMW Compact, the engine has an open-deck block that directs coolant across the banks of cylinders rather than along them.
		More Valvetronic engines will follow even though a forthcoming in-line six for the 7-series is likely to be a carry-over unit from the existing 3.5.
		However, that doesn’t preclude the use of a new Valvetronic cylinder head, which could easily be designed to fit the existing block.
	www.indiacar.com /infobank/ntech_trainthought.htm (420 words)

	BMW Valvetronic (Site not responding. Last check: 2007-10-15)
		De VALVETRONIC is bovendien niet aangewezen op specifieke soorten (zwavelvrije) benzine om het maximale verbruikspotentieel to realiseren.
		De VALVETRONIC is tegelijkertijd voor BMW de maatregel die de hoogste individuele bijdrage levert aan het realiseren van de toekomstige, zeer zware EU-verbruiksdoelstellingen.
		BMW volgt daarmee consequent de filosofie van het merk om baanbrekende techniek niet mondjesmaat, in bepaalde modellen, voor bepaalde landen aan to bieden, maar juist zo snel mogelijk, voor alle modellen, in alle landen ter wereld.
	home.wanadoo.nl /web5/autotech/bmw/bmw2.htm (431 words)

	BMW's New Six-Cylinder Engines - In Depth - GermanCarFans.com (Site not responding. Last check: 2007-10-15)
		VALVETRONIC is, therefore, moving in the direction of higher engine speeds, a fact that will most definitely appeal to the more sport-orientated customer.
		In this context, VALVETRONIC is also compared with lean direct injection systems, which for very good reasons BMW is not currently offering: Lean DI systems can, for example, only exploit their full fuel consumption potential when using sulphur-free petrol.
		VALVETRONIC is based to a great extent on the tried and tested, likewise infinitely variable BMW bi-VANOS (variable camshaft control).
	www.germancarfans.com /print.cfm/ID/2040718.001 (13294 words)

	Car and Driver Magazine - Technical Highlights - April 2005
		The company has taken the Valvetronic system that was introduced three years ago on the 7-series sedan and adapted it to the company's six-cylinder engine.
		Valvetronic is a complex mechanism that varies how far and for how long the engine's intake valves open by essentially varying the rocker-arm ratio in the valvetrain.
		In other words, when it comes to breathing, Valvetronic virtually eliminates the compromise between a high- and low-rpm bias in the engine's breathing.
	www.caranddriver.com /article.asp?section_id=4&article_id=9266 (457 words)

	Parker valve island range extended: News from Parker Hannifin
		Valvetronic is a global concept and features an innovative 'Plug in' system of electrical connections, enabling electro-pneumatic valves to be speedily assembled into a valve island with transparent automatic addressing of the valves.
		Connection of the Valvetronic island to a PLC is possible with a choice of subD25, 19 pin round, or cable gland connectors and reduces the cost of commissioning and maintenance.
		Additionally, with IP65 protection on all electrical connections, Valvetronic islands can be mounted close to the actuators in an industrial environment.
	www.engineeringtalk.com /news/par/par100.html (303 words)

	Ultimatecarpage.com forums - Stepless throttles VTEC
		Valvetronic is the last (and biggest in BMW's history, as BMW claims) improvement.
		In valvetronic there is a basic mechanism which controls the intake valve lift from about zero (for idling) to a maximum value.
		The new system, compared to valvetronic, seems better as it has fewer and lighter parts, it has fewer interfering joints for conveying the motion from cam lobe to valve and it has no wear concentration points.
	www.ultimatecarpage.com /forum/showthread.php?p=7678 (2024 words)

	Hydrogen Now! - BMW sets nine records for hydrogen-drive cars with combustion engine with a top speed in excess of 300 ...
		Exclusive to BMW, Valvetronic technology serving as a standard feature to mastermind the valves on the 12-cylinder gives the company's engine development specialists an ideal tool for controlling this demanding gas charge cycle.
		Valvetronic controls not only the duration of valve movement, but also the actual valve lift and is based consistently on BMW's infinite camshaft adjustment process.
		Incorporating a hydraulically controlled adjuster unit in the camshaft drive, Vanos modifies the beginning and end of the valve opening period, fully variable valve management serving to adjust the gas charge cycle in the 12-cylinder power unit perfectly to the requirements and characteristics of hydrogen drive.
	www.hydrogennow.org /HNews/PressReleases/BMW/BMWSets9Records.htm (804 words)

	AutoCentrum.pl - FOTO/Udoskonalone BMW serii 7 na wiosnę, aktualności motoryzacyjne, aktualności biznesowe, prognoza ...
		Wprowadzony po raz pierwszy w modelu BMW 630i nowy sześciocylindrowy rzędowy silnik benzynowy z magnezowo-aluminiową skrzynią korbową i w pełni regulowanym napędem zaworów VALVETRONIC dostępny jest teraz także w serii 7.
		BMW 760i/Li: silnik dwunastocylindrowy z bezpośrednim wtryskiem benzyny i układem VALVETRONIC.
		Układ VALVETRONIC odpowiada przy tym za niskie zużycie paliwa w zakresie obciążenia częściowego.
	www.autocentrum.pl /go/355__FOTO_Udoskonalone_BMW_serii_7_na_wiosne__PAP20050207W03506.html (777 words)

	BMW Technology Glossary (Site not responding. Last check: 2007-10-15)
		VALVETRONIC regulates the quantity of air that the engine inducts for combustion.
		VALVETRONIC solves this problem by utilising the valves to control the supply of air directly.
		The VALVETRONIC variable valve lift control system incorporates an electrically adjustable arm to control the maximum lift of inlet valve as camshaft rotates.
	www.bmw.com.au /script/technology/technology.asp?id=4 (530 words)

	Automotive Industries: BMW builds a better X5 - New Product In Brief
		The '04 X5 4.4i's Valvetronic V-8 delivers 315 hp vs. the previous 4.4L's 290 hp and 16/22 mpg EPA economy vs. the previous 14/18.
		Valvetronic (see AI May, 2003 for technical details) is a patented BMW system that varies valve lift (from 0.3 mm at idle to 9.7 mm at full-power) to control engine output.
		Teamed with the Valvetronic engine is a new 6-speed automatic transmission (replacing the previous 5-speed automatic) that smoothes the flow of power from rest to high speeds with more, smaller steps between 1st and top gears.
	www.findarticles.com /p/articles/mi_m3012/is_12_183/ai_111617016 (570 words)

	content home (Site not responding. Last check: 2007-10-15)
		La caratteristica del nuovo motore è il sistema Valvetronic (da "valvola variabile" ed "elettronica") che insieme alla doppia Vanos consente un controllo del carico attraverso regolazione variabile (per ampiezza e durata) dell'apertura delle valvole.
		BMW si applica con un impegno costante allo sviluppo di tecnologie per il risparmio energetico: dalla iniezione diretta, alle valvole elettromeccaniche fino a Valvetronic un sistema unico al mondo di controllo delle valvole, che riduce il dispendio di carburante all'interno del motore di circa il 10% nel ciclo Ece e nel modo utilizzo cliente.
		Per rendere accessibile questi vantaggi a una cerchia più ampia di clienti, BMW applicherà nei prossimi due anni questa tecnologia VALVETRONIC su tutti i motori a otto e dodici cilindri.
	www.bmw.it /Prodotti/Auto/Serie3/compact.2001/content_motore.shtml (389 words)

	ДДД FORUM :: Просмотр темы - BMW. Серия 3 Compact (Site not responding. Last check: 2007-10-15)
		Однако главное заключается в том, что на моторах Valvetronic отсутствует...
		В 1,8-литровом исполнении двигатель Valvetronic развивает 115 л.с.
		Кроме новых моторов Valvetronic, компания может “похвастаться” и другими техническими новинками.
	ddd.kursknet.ru /forum/viewtopic.php?p=72613 (354 words)

	CanadianDriver: Auto Tech - BMW's 7-Series engine technology
		The BMW Valvetronic system changes the opening height of the intake valves to control airflow.
		The key components of the Valvetronic system are a lever, placed between the camshaft and the valve, an eccentric shaft, and an electric motor with worm drive connected to the eccentric shaft.
		There is no throttle plate or shaft to cause turbulence in the intake airflow, and the Valvetronic operation gives a very fast response, with very little delay of the air entering the combustion chamber.
	www.canadiandriver.com /articles/jk/020213.htm (681 words)

	New BMW 3 Series - In Depth (Site not responding. Last check: 2007-10-15)
		VALVETRONIC ensures infinite control of the opening and control times of the intake valves as a function of the gas pedal position.
		Second-generation VALVETRONIC technology now featured for the first time in the 330i therefore enables the engine to run smoothly up to speeds in the region of 7,000 rpm, previously the domain of the thoroughbred sports engine.
		In this respect BMW VALVETRONIC comes very close to the individual throttle butterfly technology used in motorsport, significantly enhancing the qualities of the Ultimate Driving Machine so typical of the 330i and reducing fuel consumption at the same time.
	www.worldcarfans.com /news.cfm?newsid=2050118.013&page=4&bmw=1.html/country/gcf (3903 words)

	BMW Serie 3 Compact my 2001 \| MotorBox \| Auto \| Viste&Provate \| Le Nostre prove
		Il nuovo cuore a benzina di 1,8 litri con la sofisticatissima tecnologia Valvetronic, che assicura un considerevole risparmio sui consumi di carburante, paragonabili a quelli di un motore a iniezione diretta.
		Ma in arrivo ci sono un 4 cilindri due litri a benzina (entro l’anno), sempre con tecnologia Valvetronic, e un 2.0 turbodiesel (ad agosto), più grintoso di quello attualmente in forza sulla Serie 3 e, probabilmente, con tecnologia common rail.
		RESPIRO UMANO Come l’uomo inspira più profondamente sotto sforzo e meno affannosamente nella normalità, il sistema Valvetronic gestisce, adeguandola al caso, la sezione di apertura delle valvole di aspirazione correggendola millimetricamente a seconda delle istantanee esigenze.
	www.motorbox.com /Auto/VisteeProvate/Le_Nostre_prove/792.html (1187 words)

	BMW MINI Technikforum :: Thema anzeigen - VALVETRONIC (Site not responding. Last check: 2007-10-15)
		VALVETRONIC ermöglicht einen vollvariablen Ventilhub von 0,0 bis zu 9,7 Millimeter.
		Für den BMW Fahrer bringt der neue 316ti-Vierzylinder mit VALVETRONIC einen geringeren Verbrauch, verminderte Abgasemissionen und zugleich ein besseres Ansprechverhalten sowie eine höhere Laufruhe mit sich.
		Valvetronic und VANOS sind nicht zu vergleichen, haben andere Ziele und Wirkungsweisen.
	www.newmini-technik.de /printview.php?t=793&start=0 (2300 words)

	Bimmerforums.com - The Ultimate BMW Forum
		Refinement in design, in turn, expresses the car’s enhanced driving dynamics and sportiness at very first glance while retaining the unmistakable presence that gives the BMW 7 Series its elegant and charismatic character.
		Launched in 2003, the BMW 760i/Li V12 remains unchanged, with engine output of 438 horsepower (SAE net) and maximum torque of 444 lb-ft. With its combination of four-valve technology, VALVETRONIC, double-VANOS and direct fuel injection, the BMW 760i/Li remains unique in the marketplace.
		VALVETRONIC ensures the engine’s very high level of fuel economy under partial load.
	www.bimmerforums.com /2006-7series/index.php (1669 words)

	Ward's Auto World: Technology WrapUp; New BMW engines: No throttle - Bayerische Motoren Werke AG develops Valvetronic ... (Site not responding. Last check: 2007-10-15)
		BMW AG is ready with a significant step forward in the ongoing advance of engine design with its innovative, all-new Valvetronic concept.
		Valvetronic electronically - and instantaneously - varies both lift and the timing of inlet valves, so the engine breathing is controlled completely by the intake valves.
		BMW engines, the Valvetronic will be manufactured at the German company's purpose-built Hams Hall plant near Birmingham, England, where construction on the greenfield site started just three years ago.
	www.findarticles.com /p/articles/mi_m3165/is_2001_Jan/ai_71359162 (485 words)

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