Almost all gasoline or diesel engines of internal combustion are based on the mechanical system of the primary drive (timing), and until recently, it assumed the torque transmission either through the drive chain installed and operating inside the engine or through the drive belt, installed outside. In 2007, Dayco designed and developed an alternative solution — the world’s first BIO drive system (Belt-in-Oil) «belt-in-oil».
As a Ford Partner for Power Transmissions, Dayco was tasked to develop a solution to replace the high-pressure fuel pump chain drive of the popular engine «Lynx», which was widely used in various automaker models since 1998 — Focus, C-Max, S-Max, Mondeo , Galaxy, Torneo Connect and Transit.
Bio technology produced a real revolution in synchronous transmission systems, since it proposes a solution that allows the drive belt to work inside the engine.
As a result, the previous advantages associated with the chain drive in comparison with the belt, from the point of view of the engine size, became less relevant, and more obvious advantages of the belt drive are preserved. These advantages are expressed in the possibility of a reduction in the weight of the transmission and, consequently, its inertia, which, in combination with lower friction characteristics of the belt, provides double environmental advantages — lower fuel consumption and smaller emissions.
In addition, BIO belts are not so wide as conventional belts, since the need to disperse heat, which naturally accumulates as a result of friction between the belt and rollers / tensioners, is achieved due to the fact that the oil simultaneously reduces the friction level in these components and cools the belt. DAYCO BIO belts also absorbed the advantages of using teflon tissue on the inner surface in accordance with the unique HT (High Tenacity) technology. This contributes to an additional reduction in friction and means that belts are able to withstand heavy loads and have a longer service life.
It is important that the timing belt is, regardless of where it is installed — inside or outside the engine — it does not stretch, which prevents the risk of changing the phases of gas distribution as a result of elongation and as a result, actively helps to avoid increased emissions caused by improper gas distribution. Bio Drive Bold System also provides a noticeably lower noise level than a similar chain drive system.
Automakers are under great pressure to reduce exhaust emissions and increase the fuel efficiency of engines that feed their vehicles, and this means that they must push the technological boundaries to achieve the desired results. And that is why they need to work in close partnership with experts in the field of automotive components, such as Dayco to develop technologies that contribute to the solution of the tasks and achieving the intended goals.
For example, pursuing the goal to reduce emissions and reduce fuel consumption, Ford, solved a series of high-performance diesel and petrol engines of small volume.
The Ford EcoBoost gasoline engines family with turbocharging and direct fuel injection is designed to achieve the power and torque indicators inherent in more voluminous engines, with a simultaneous decrease of 15% emissions and improvement on 20% of fuel efficiency. And an integral part of the design of ECOBOOST engines is the revolutionary BIO drive system developed by DayCo.
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