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Diesel
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In the commercial-vehicle sector, the diesel is king. Only modern compression-ignition vehicles offer that combination of good qualities which is essential for professional operations: high torque even at low engine speeds provides the power that makes it possible to move heavy loads in the first place. Economical fuel consumption makes diesel vehicles an economical solution. A high degree of reliability and longevity offers protection against expensive downtimes. And the emissions of a modern diesel engine are so low today that even commercial vehicles are able to meet the ever more demanding emission standards.
Bosch supplies diesel systems for on- and off-highway applications of every scale: from the smallest stationary engine right up to the largest diesels for shipping. Our worldwide presence offers vehicle manufacturers and operators solutions ideally matched to local requirements.
- System supplyer for all diesel applications
- Perfect system function thanks to integrated solutions with coordinated interfaces
- Innovations for lower fuel consumption, reduced CO2 output and enhanced torque
- Bosch quality for reliable long-life operation
- Many years’ partnership with customers all over the world
- Worldwide service organization for economical vehicle operation with minimized downtimes
Engine control
Electronic Diesel Control (EDC) regulates the functions of the injection system in such a way that the engine provides the demanded engine torque. The injection parameters are constantly matched to the engine and the driving situation. Engines with an electronically controlled diesel system from Bosch combine maximum dynamic performance with minimum fuel consumption and emissions.
Customer benefits
- Cleaner and economical engine operation thanks to the rapid adaptation of all injection parameters
Common Rail System
While other diesel injection systems generate the fuel pressure for each injection separately, the Common Rail System separates pressure generation and injection from one another. The fuel is constantly available at the pressure required for injection.
Design and components
The Common Rail System is modular in design. The right combination of high-pressure pump, injectors, rail and electronic control unit results in systems for all types of engine. Conventional injection systems can be replaced with the Common Rail System with relatively few changes. The injectors can be fitted in the cylinder head like a nozzle-holder combination, and the high-pressure pump replaces the one previously used.
Customer benefits
- Clean and highly efficient fuel injection thanks to extremely short injection gaps and multiple injections
- High engine performance and quiet running with low fuel consumption and fewer emissions
- Systems to match all types of engine thanks to modular design
Modular Common Rail System
While other diesel injection systems generate the fuel pressure for each injection separately, the Common Rail System separates pressure generation and injection from one another. The fuel is constantly available at the pressure required for injection.
The Common Rail also contributes to reduced emissions in off-highway applications. The Modular Common Rail System MCRS now also offers all the benefits of Common Rail injection for large diesel engines. Modular system design for requirements ranging from a 4-cylinder in-line engine to a 20-cylinder V-engine is easy.
The Bosch MCRS is a Common Rail System in modular design for large diesel engines which does not require a separate rail. The fuel-storage volume is integrated in the high-pressure pump and the injectors. This minimizes hydraulic pulsation in the high-pressure system. The fuel accumulator in the injector also ensures a nearly constant pressure even during injection and maximum flexibility for multiple injections. In order to guarantee reliable operation even with fuels of low lubricity, high-pressure pumps and injectors are designed to be particularly robust. The Bosch EDC17 CV41 electronic engine control unit is suitable for installation close to the engine.
Typical applications for large high-speed diesel engines are, for instance, big construction-site and mining vehicles, yachts, fast ferries and generators as well as medium-speed large diesel engines which are typically used in locomotives. Here the MCRS technology is expected to save considerable amounts of fuel. Additional reductions in emissions and fuel consumption are possible by further increasing the pressure from the current 1,600 bar to 2,200 bar in the future.
Customer benefits
- High injection pressure independent of engine speed
- Lower operating noise
- Reduced fuel consumption
- Adherence to stricter emission limits
- Adaption to exhaust-gas treatment
- Long lifetime
Other injection systems
Not all commercial-vehicle engines are equipped with the electronically controlled Common Rail System. With its range of differing injection systems controlled mechanically or electronically, Bosch has the solution to match every application. These systems fulfill a broad range of requirements with regard to engine installation, pressure level, costs and emissions.
The range includes various types of single-cylinder and in-line fuel-injection pumps.
Exhaust-gas treatment
Modern commercial vehicles are cleaner than ever nowadays. Thanks to newly-developed exhaust-gas treatment systems from Bosch such as the Denoxtronic Urea Dosing System for SCR systems and the Departronic Diesel Dosing System for particulate filter regeneration they already fulfill today the toxic emissions standards of the future.
In addition, Bosch offers complete exhaust-gas systems for off-highway applications within the framework of a joint venture.
Starters
Bosch offers a broad range of high-quality starter motors for on- and off-highway commercial vehicles. Whether for 12 or 24 V electrical systems, whether for diesels up to 72 liters or gasoline engines up to 144 liters, we always have the suitable solution for the most varied demands and special customer wishes.
Light and compact in construction. Reliable throughout their entire long service life of up to 800,000 km on the road 14,000 hours in off-highway use.
Generators
In road haulage and also in the off-highway sector, long trip times are all in a day’s work. Safety and comfort as well as a wide variety of functions are thus prime considerations. So the number of electrical consumers is correspondingly large. Bosch generators in our Heavy Duty (HD) line are designed for a variety of applications, cover all energy requirements and guarantee the reliable supply of the entire electrical system. In addition, their high density of performance and efficiency contribute to reductions in fuel consumption and CO2 output.
Thermal management
The concept thermal management stands for the energy optimization of heat management in motor vehicles aimed at reducing consumption and emissions, guaranteeing engine cooling at all operating points as well as optimizing the comfort inside the passenger compartment. Our products ensure that the ideal temperature is controlled under all operating conditions. We thus make a contribution toward the reduction of both fuel consumption and CO2 output.
