PI 051-16 Lohr am Main, 2016-08-19

Fast switching valve saves fuel and reduces emissions

The fast switching directional valve 3WES..1XK/ by Rexroth is designed for a life cycle of 675 million switching cycles with switching on and switching off times of ≤5 ms offering repetition accuracy.

Fast switching directional valve 3WES..1XK/ by Rexroth supports the efficient operation of large engines

In the shipping industry, as well, the operating costs and increasingly stricter exhaust emission standards are driving forces. Variable valve controls allow for a more efficient operation of large engines with reduced emissions. The fast switching valve 3WES..1XK/ by Rexroth has been especially developed for this application and with its 675 million switching cycles, it is particularly reliable and lasting.

The inlet and outlet valves of large machines are compulsorily controlled by the camshaft. Using a variable valve control, this can be done in a variable manner: depending on the arrangement, the valve stroke is shortened, reduced or extended. This adjustment of the valve opening times allows for an efficiency increase as well as an emission reduction for engines.

Per cylinder, a valve in plug-in design with a maximum flow of 200 l/min is used. The valve is controlled by means of pulse width modulated voltage signals via the motor control unit. For the valve, Rexroth has developed a new actuator with flat anchor principle.

The sealing system is designed for use with SAE40 motor oil with an operating pressure of up to 350 bar. The use of highly precise components and materials which are adjusted to each other allows for a life cycle of 675 million switching cycles with switching on and switching off times of ≤5 ms offering repetition accuracy.

Economical, precise, safe, and energy efficient: drive and control technology from Bosch Rexroth moves machines and systems of any size. The company bundles global application experience in the market segments of Mobile Applications, Machinery Applications and Engineering, and Factory Automation to develop innovative components as well as tailored system solutions and services. Bosch Rexroth offers its customers hydraulics, electric drives and controls, gear technology, and linear motion and assembly technology all from one source. With locations in over 80 countries, more than 31.100 associates generated sales revenue of approximately 5.4 billion euros in 2015.

To learn more, please visit

The Bosch Group is a leading global supplier of technology and services. It employs roughly 375,000 associates worldwide (as of December 31, 2015). The company generated sales of 70.6 billion euros in 2015. Its operations are divided into four business sectors: Mobility Solutions, Industrial Technology, Consumer Goods, and Energy and Building Technology. The Bosch Group comprises Robert Bosch GmbH and its roughly 440 subsidiaries and regional companies in some 60 countries. Including sales and service partners, Bosch’s global manufacturing and sales network covers some 150 countries. The basis for the company’s future growth is its innovative strength. Bosch employs 55,800 associates in research and development at 118 locations across the globe. The Bosch Group’s strategic objective is to deliver innovations for a connected life. Bosch improves quality of life worldwide with products and services that are innovative and spark enthusiasm. In short, Bosch creates technology that is “Invented for life.”

Additional information is available online at , ,


Search press releases


Susanne Herzlieb
Maria-Theresien-Straße 23
97816 Lohr am Main
Phone: +49 9352 18-1573

Related Articles


Steel, rubber and oil – digital?! Industrial hydraulics must pick up the pace on the way to the digital future

Industrial hydraulics – today, this largely amounts to standard hydraulics consisting of iron, rubber, oil and, maybe, 24V connection sockets. At the same time, Industry 4.0 and the Internet of Things are changing the face of the factory floor: Decentralized intelligence, integrated sensor technology and connectivity have already become key requirements for many industrial applications. Nonetheless, hardware-intensive industrial hydraulics is in a position from which it can smoothly glide into this new digital environment. The requirement: Hydraulic manufacturers must accept the challenge of intensively advancing digitalization.

Press Information

Software of the future: Freed from …

…the restraints of hardware – the software of the future. In the factory of the future, machine modules and processing stations will be regularly reorganized, flexibly take on new tasks and retrieve the appropriate software function. This change has already begun: Machine manufacturers are already able to install identical control functions on various device platforms without any extra effort. Here is an overview of concepts for today and tomorrow: