25 Jul the n55 bmw s first turbocharged valvetronic engine 1 x time to explain the Valvetronic technology on their Youtube channel. The common feature of BMW’s future reciprocating-piston petrol engines will be VALVETRONIC. 1 Nov Effective relationship in between Valvetronic Engine & BMW.

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This mobility is made possible first and foremost by combustion engines drawing their power from fossil energy carriers, which, even today, provide the foundation in generating mechanical drive power in the automobile.

Now Valvetronic replaces this conventional function by infinitely technoligy intake valve lift, offering a quantum leap in technology quite comparable to the changeover from the carburetor to fuel techhnology. Valvetronic is a variable valve timing system to offer continuous and precise control over variable intake valve lift, from 0. The amount of energy required for driving a vehicle also drops with decreasing driving resistance provided by, for example, a reduction in roll and air resistance.

Valvetronic – Wikipedia

Cylinder heads with Valvetronic use an extra set of rocker arms, called intermediate arms lift scalerpositioned between the valve stem and the camshaft. An additional eccentric shaft alters the lever’s distance from the camshaft, with the eccentric’s position determined by a worm drive from an electric motor. These intermediate arms are able to pivot on a central point, by means of an extra, electronically actuated camshaft. These intermediate arms are able to pivot on a central point, by means of an extra, engije actuated camshaft.

The first objective is to minimise emission components such as hydrocarbon, CO2 and nitrogen oxides NOx subject to specific limits. To make more efficient use of the energy in fuel, the actual process of using energy must reach a higher standard of efficiency.


The position of the lever converts the cam action into a smaller or larger valve lift, as requested by the engine management system. Valvetronic-equipped engines rely on the amount of valve lift for load control, rather than a butterfly valve in the intake teechnology. DME has a fail-safe program in the event of certain electrical faults.

DME can track dozens of different sensors, but every system needs to know three basic things:. All of this should be achieved with a maximum standard of comfort and safety on the road. A comparison with the human being clearly explains how Valvetronic works: Whenever we technllogy less air, we do not throttle the supply of air by, say, closing our enigne or our mouth, but simply breathe in a shorter, flatter process of ventilation.

Download your Reports for Valvetronic Engine Technology.

After the post regarding the Si, a few of us began to discuss the different merits of the engine and why technologies tcehnology as VANOS …. Valvetronic is one of those terms often thrown around by BMW in their press releases, but seldom is being explained to the masses. It typically works in conjunction with the independent Double VANOS system that continuously varies the timing on both intake and exhaust camshafts.

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. In a conventional combustion engine the throttle butterfly is basically comparable to a human being keeping his nose or mouth at least partially closed.


What Is Valvetronic? BMW’s Innovative Throttle System

Are you interested in any one of this Seminar, Project Topics. Negine on signals formerly taken mechanically from the accelerator pedal, the stepper motor changes the phase of the eccentric cam, modifying the action of the intake valves.

In the homologation of motor vehicles, Europe, Japan and the US apply different driving cycles to determine emissions and fuel consumption. Valvetronic allows the engine to run without a throttle butterfly, the cylinder charge being determined under part load as a valveetronic of the valve-opening period.


Its most important feature is that it is able to save at least 10 per cent fuel throughout the entire operating range relevant to the etchnology, with a corresponding reduction in exhaust emissions, regardless of fuel quality. Innovative technology was essential in order to reach the demanding objectives and functional requirements desired. Because the intake valves now have the ability to move from fully closed to fully open positions, and everywhere in techhology, the primary means of engine load control is transferred from the throttle plate to the intake valve train.

DME provides raw data to an on-board computer that uses an alphanumeric display to provide you with information such as the average fuel consumption, the distance you can still cover with fuel in the tank, an average speed, outside temperature and more.

DME operates by continually monitoring such factors as engine temperature, speed, intake airflow, exhaust gas composition, and even the altitude. Clearly, the development engineer is unable to influence these external parameters? The Valvetronic system has a conventional intake cam, but it also uses a secondary eccentric shaft with a series of levers and roller followers, activated by a stepper motor. The pistons are still running, taking air from the partially closed intake manifold.