Mobility Solutions

Bosch transmission control units Transmission basics How a dual-clutch automatic functions and how much processing power is necessary for modern transmission control

Customer benefit: Compared to manual transmissions, modern automatic transmissions enhance driving comfort and also save on fuel, which is because they independently determine the point at which the engine runs most efficiently. In series-produced vehicles, there are now up to nine gears to choose from.

High-tech: Modern transmissions are equipped with a great deal of digital intelligence so that they are always capable of identifying the engine’s ideal operating point. Bosch supplies the control units, sensors, and solenoid valves for all major types of transmissions. The control unit is a high-tech miniature computer that enables the complex operation of different types of automatic transmissions. The processing capacity of a modern transmission control unit is an incredible 160 times more powerful than that of the computer used for the first lunar flight.

A wide range of automatic transmissions featuring Bosch controls
Traditional automatic: The tried-and-tested transmission shifts automatically using programs stored in the control unit. In many cars, the driver also has the option of shifting to another gear with switches on the steering wheel, which prevents shifting errors. The traditional automatic often has six gears, though some ultra-efficient versions now feature up to nine gears.

Automated manual transmission: This type of transmission combines the best of an automatic and manual transmission. It offers the comfort and convenience of an automatic with the individual control of a manual transmission. The clutch remains open when idle and only uses energy when being closed. This transmission therefore also saves fuel, reducing CO2 emissions in the process.

Dual-clutch transmission: This particular model actually comprises two separate transmissions. One is used for the even gear set and the other for the odd. Two clutches shift back and forth between both transmissions within a split second, allowing for especially swift gear changes. The complex coordination in a dual-clutch transmission is only made possible by a sophisticated transmission control system with powerful processing such as that offered by Bosch.

CVT: CVT (continuously variable transmission) is an automatic without any fixed shifting point, which completely eliminates shifting response delays. As a result, the driver can accelerate without any interruption as the driving force is available at all times. The vehicle does not have to shift back and forth between fixed shifting points – a feature that provides extra driving comfort, especially when going up an incline. CVT is widespread in Asia and North America.

eClutch: The Bosch eClutch introduces the comfort of an automatic to a manual transmission in a cost-effective way. Thanks to this innovative technology, drivers can go into first gear simply by stepping on the gas pedal. The eClutch automates the clutch only, not the transmission. The clutch pedal transmits an electric signal to an actuator, which decouples the clutch. This affordable alternative to a fully automatic transmission is especially useful for drivers of compact cars that frequently find themselves in stop-and-go traffic within urban settings. The eClutch also represents an appealing option for drivers in emerging markets.

The future of transmission technology at Bosch
Coasting: Thanks to the eClutch, manual transmissions can also benefit from the fuel-saving coasting function, which is otherwise only possible with modern automatic transmissions. Coasting expands on the well-known start-stop function and enables additional fuel savings of up to ten percent. When this function is used, the engine not only switches off at traffic lights, but also while the vehicle is moving.

Electronic horizon: Bosch is driving forward connecting transmissions with the latest available navigation information. Navigation systems know the lay of the land and can transmit this data to the automatic transmission, which, in turn, can shift into neutral and use the residual momentum if city limits are coming up after a long bend, for example. This even more intelligent automatic transmission with electronic horizon can provide additional double-digit fuel savings.
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  • March 25, 2015
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New business unit: Two-Wheeler and Powersports Bosch strengthens its presence in motorcycle markets around the world Broad product portfolio for all classes

  • “We are aiming to become a leading supplier in the motorcycle market,” says Dr. Dirk Hoheisel
  • Bosch sets up an independent supplier business for motorcycles
  • Market expected to grow to over 160 million two-wheelers worldwide by 2021
  • Bosch is world leader in the market for motorcycle safety systems
  • Products for the small motorcycles to highperformance bikes, quads, personal watercraft, and snowmobiles
Yokohama/Stuttgart – Bosch intends to reposition itself in the rapidly expanding global motorcycle market. The technology and services company is about to pool its motorcycle activities from the areas of riding safety systems, powertrain technology, and display instruments into one business unit, the newly formed “Two-Wheeler and Powersports.” The objective is to address the individual requirements of motorcycle manufacturers worldwide even more effectively. What’s more, Bosch is looking to expand its product portfolio and strengthen its expertise in two-wheeler system solutions. “Bosch technology for more efficiency and safety should be part of any car, and in the future, the same will go for motorcycles,” says Dr. Dirk Hoheisel, member of the board of management at Robert Bosch GmbH. “We are aiming to become a leading supplier in the motorcycle market, too.”

Two-Wheeler and Powersports is part of the Bosch Mobility Solutions business sector. With its headquarters in Yokohama, Japan – the very heart of the international motorcycle industry – and branches in the United States, Europe, India, and China, Bosch has a global reach here. In addition to powered two-wheelers, it is planned that the new business unit will serve the market for special-purpose vehicles such as quads, personal watercraft, and snowmobiles. The unit, which is starting off with about 40 associates, can draw upon a worldwide network of several thousand colleagues plus the manufacturing capacity of the Mobility Solutions business sector.

Market expected to double within five years
Globally, the need for affordable mobility is on the increase, and this is pushing demand for powered two-wheelers. Studies indicate that by 2021, more than 160 million two-wheelers will be produced annually – a third more than today. “The portion of the market relevant for Bosch, which covers driving safety systems, powertrain technology, and displays and infotainment systems, will double over the next five years,” Hoheisel says. Most of that growth will take place in Asia, studies suggest, predicting that in 2021, nearly 90 percent of all powered two-wheelers will be made in China, India and South East Asia. That group consists mainly of small motorcycles with engine displacement up to 250 cubic centimeters, one of the most common modes of transport throughout large parts of Asia.

The future of the motorcycle is safe, clean, and connected
Bosch components service the entire two-wheeler spectrum: from those in Asia’s lower price segment to powerful machines with over 1,000cc displacement, for which demand is strongest in Europe, Japan, and North America. The new business unit offers safety solutions such as ABS and Motorcycle Stability Control (MSC), a type of ESP for motorcycles. Bosch is the market leader for motorcycle safety systems. The portfolio also includes electronically controlled injection systems, powertrain components for electric two-wheelers and interfaces for connecting motorcycles with smartphones or tablets as well as connected cloud services. “Our systems put even more safety, efficiency, and fun to ride into the motorcycle,” says Geoff Liersch, head of the new Bosch business unit.

With all of these features Bosch provides solutions for the most pressing challenges of the global motorcycle market: many countries are passing stricter emissions legislation, and more and more two-wheeler riders are involved in fatal accidents. In 2010 alone, more than 285,000 people died in accidents around the world. Yet according to GIDAS, the German accident database, using ABS, can prevent one-quarter of all motorcycle accidents resulting in injuries or fatalities. Additionally MSC can have a positive effect on the outcome of two-thirds of all motorcycle accidents on curves that occur due to rider error.

Modern Bosch technology reduces fuel consumption
Along with safety, the desire for fun, fuel economy, and connectivity are key drivers of Bosch’s motorcycle business. In Asia, many two-wheelers with internal-combustion engines are still fitted with a simple carburetor, whereas Bosch employs its electronically controlled injection system. By comparison, this system can cut fuel consumption by up to 16 percent, depending on conditions and environment. “This is how we are helping to reduce emissions in countries such as China and India,” Liersch says. At the same time, Bosch is giving two-wheelers digital intelligence with its engine control solutions. In conjunction with a smartphone app, these make it possible to activate the immobilizer, or read out fault memory. Bosch also offers the Bluetooth interface or connectivity control unit needed for these applications.

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  • March 23, 2015
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#MediaHackDay: collaboration between Bosch and Axel Springer Media Entrepreneurs The first hackathon dedicated to “digital media in the connected vehicle” mySPIN as the basis for current and future vehicle connectivity solutions

  • First collaboration between the Axel Springer Media Entrepreneurs and Bosch
  • More than 120 independent software developers and designers work on integrating digital media into cars
  • Bosch brings the internet into the car and the car onto the internet
  • The mySPIN smartphone integration solution serves as the basis for mobile connectivity solutions
Stuttgart/Berlin – Together with the Axel Springer company Media Entrepreneurs, Bosch is staging the first joint hackathon dedicated to the connected car from March 21-22, 2015. “Connected Car MediaHackDay” will bring together more than 120 independent software developers, designers and product visionaries at the Axel Springer Plug and Play Accelerator in Berlin. Together with Bosch and ten other interface partners, they will develop new ideas to bring digital media into the car and onto the street. A jury that includes Dr. Dirk Hoheisel, member of the board of management of Bosch responsible for vehicle connectivity, among other things, will award prizes to the best app development. The hashtag #MediaHackDay will provide live updates on the Connected Car MediaHackDay as well as a forum for related discussions, enabling everyone who is interested in the event to take part using digital media.

Direct access to Bosch system interface
Bosch is granting the participants exclusive access to the mySPIN system’s data interface for developing their ideas. The solution allows smartphones to be integrated into the car’s infotainment system quickly and conveniently. And because the apps can be operated much more comfortably and safely via the vehicle’s display and controls, this facilitates innovative functions and creative apps. “The connected car is the better kind of car,” member of the board of management Hoheisel said. “A connected car makes driving safer, more comfortable, and more efficient. Finding the fastest route with the navigation app and listening to your favorite music with online radio – all of that is already possible. I am excited to see what new and inspiring solutions the developers and designers will come up with during the hackathon,” he added.

Building on a successful concept
After a successful trial hackathon last fall, Bosch is taking advantage of this event to further pursue connected driving and collaborative product development. “It allows us to tap into the potential of innovative ideas outside Bosch and actively drive vehicle connectivity forward. This includes partnering with others across traditional industry boundaries,” Hoheisel said. He noted that the joint collaboration with Axel Springer Media Entrepreneurs is proof that Bosch is thinking beyond purely technical solutions for vehicle connectivity. “Our objective is connected mobility solutions, which also include digital content,” Hoheisel added.

Jury to award attractive prizes
At the end of the Connected Car MediaHackDay on March 22, 2015, a three-person jury will award prizes to the best ideas and their realization. The jury consists of Simon Erdem, product management team leader at, Holger Weiss, CEO of the software company Aupeo, and Dr. Dirk Hoheisel, member of the board of management of Robert Bosch GmbH. Bosch is furnishing the event’s top prize: vouchers with a value of 5,000 euros for Bosch products of the winners’ choice.

mySPIN – the smartphone integration solution from Bosch
mySPIN can integrate apps from iPhones and Android smartphones into the car. All compatible apps on the smartphone can then be displayed and operated via the vehicle’s touchscreen. The onscreen design and control concept adjusts to the driving situation. By integrating the smartphone and all relevant apps into the vehicles it manufactures, an automaker can offer customers an attractive range of services that are always up to date.

What is a hackathon?
A hackathon is an event at which programmers, software developers and designers, and project managers cooperate closely to jointly develop new software. Hackathons typically last one to two days. Generally, the objective is to develop new software for a specific purpose. The term “hackathon” is a portmanteau that combines “hack” with “marathon.” In this context, “hack” means to program in a playful or exploratory way. Hackathons have become more and more widespread since the mid-2000s and are used by companies and venture capital firms to quickly develop innovative software-based technologies.

MediaHackDay on Bosch's
ConnectedWorld blog:

MediaHackDay Homepage:

mySPIN on the Bosch Media Service:

Contact person for press inquiries:
Stephan Kraus
Phone: +49 711 811-6286

Social media contact:
Martin Gansert
Phone: +49 711 811-38095
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  • March 20, 2015
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17th Technical Congress of the VDA Bosch CEO Denner: “Connectivity makes cars more efficient”

  • Denner: “A connected car drives more proactively than any person”
  • Connectivity increases the suitability of electrified vehicles for everyday use
  • By 2025, 15 percent of new vehicles worldwide will be electrified
Stuttgart – Cars still have their best days ahead of them. Connecting vehicles to the internet makes them safer, more fun to drive, and reduces fuel consumption. “Connectivity makes cars more efficient,” said Dr. Volkmar Denner, chairman of the Bosch board of management, at the 17th Technical Congress of the German Association of the Automotive Industry (VDA) in Filderstadt, Germany. As an example of this, Denner pointed to the connected electronic horizon. In the future, this Bosch technology will provide real-time information about mobile construction zones, traffic jams, and accidents. On this basis, further improvements to existing functions such as start-stop coasting will be possible. At the same time, it will enable a predictive operating strategy for plug-in hybrids. Technologies such as this reduce CO2 emissions by up to ten percent or more. “These efficiency-enhancing measures should be recognized as ‘eco-innovations’ by the EU,” Denner said.

“A connected car drives more proactively than any person”
The reductions to consumption brought by start-stop coasting and an optimum operating strategy are most noticeable in real traffic conditions. In the New European Driving Cycle (NEDC), however, they have no effect. “A connected car drives more proactively than any person,” Denner said. Using up-to-date maps, cars can precisely calculate their remaining range in addition to the most efficient route. At the same time, intelligent connectivity increases the suitability of electrified vehicles for everyday use. “In only ten years, more than 15 percent of new vehicles worldwide will be electrified,” Denner said. Of these, more than 13 million new vehicles will be able to run on electricity alone, at least in urban traffic. To further increase the electric range of hybrids and electric cars, Bosch is working on improving electronic battery management. This can increase the electric range of a car by up to an additional 10 percent and give electromobility a further boost.

Eco-innovations can help meet EU fleet targets
Technically-sophisticated components make vehicles more economical and efficient, allowing them to meet the strict CO2 targets set by the European Commission. European regulations stipulate that in 2021, new vehicles will be allowed to emit an average of only 95 grams of CO2 per kilometer. This corresponds to just over four liters of fuel consumed per hundred kilometers. In 2013, new vehicles emitted an average of 132.9 grams of CO2 per kilometer. The EU recognizes especially environmentally-friendly technologies as “eco-innovations.” Automakers can use these as CO2 credits to reduce their fleet consumption levels. The maximum possible credit is 7 grams per kilometer.
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  • March 19, 2015
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  • Mobility Solutions
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