Add to Cart. We recommend this manual highly Bosch Automotive Handbook. Comment on this page. Reply 2 Like Follow 3 hour ago. Jim Letland hahahahaha Reply 2 Like Follow 5 hour ago. Lukasz Czaru so many fake sites. Many thanks Reply 5 Like Follow 6 hour ago. Georgina Kalafikis wtffff i do not understand this!
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Ida Kelvin lol it did not even take me 5 minutes at all! XD Reply 13 Like Follow 8 hour ago. The fuel injectors mounted on the fuel rail continuously dose the required fuel quantity into the intake manifold according to the spray pattern and with highest precision.
Gasoline engines require an ignition spark in order to burn the air-fuel mixture in the engine cylinder. This spark is produced by the spark plug. The required high voltage is provided by the ignition coil.
To do so, it transforms the electrical energy from the battery into an ignition voltage and provides this voltage to the spark plug at the ignition point. Air management ensures that the correct air mass is available to the engine at every operating point. The electronic engine control unit "Motronic" by Bosch allows the prioritization and central control of the many different functions that a modern engine management system is required to fulfill.
With the torque as a central point of reference, the system confidently adjusts the air-fuel mixture required then. The exhaust-gas treatment supports the OEM to fulfill international emission regulations, e.
The lambda control allows for an even more efficient cleaning. Thanks to the constant further development of system technology and the combination of innovative optimization measurements, Bosch created the "Advanced PFI" system concept.
Due to innovations such as Twin Injection, Pressure Increase and Open Valve Injection, impressing system advantages are realized and technical possibilities for this driving principle are re-defined. The use of two fuel injectors for each intake manifold optimizes the spray alignment and the mixture insertion in the cylinder.
The targeted mixture insertion, the "Spray Targeting", links fluid-physical findings and engine-related know-how. The jet geometries are adapted perfectly to the specific requirements of the intake manifold.
By way of distribution to two injectors, the spray droplet size SMD is reduced due to the lower static flow, the lower spray density due to the larger cone angle as well as the optimized approach flow within the valve single cone jet.
Overall, this improves vaporization, minimizes the wall film production and stabilizes the ignition. Other advantages include the later angular ignition spacing during cold operation and the quicker achievement of the catalytic converter's conversion point. To support the mixture generation during cold start, the pressure in the fuel-low-pressure system is temporarily raised to up to 6 bar.
This results in the increase of the vaporizing fuel mass and the reduction of the spray droplet size SMD as well as the wall film production. The increased pressure increases the maximum fuel dose and thus supports the intake-synchronous injection.
The tailored provision of flow rate and fuel pressure also reduces the medium power consumption of the fuel-supply pump. The special feature of this injection process is that the fuel is only injected into the inflowing fresh air of the intake manifold once the inlet valve is being opened. This intake-synchronous injection is performed at low to medium rotational speed under engine full load and thus has knocking tendencies.
Due to the reduced wall contact of the air-fuel mixture, the fresh flow cools down better and the knocking tendencies decrease. As a result, the compression ratio of the base engine can be increased by the factor 0. The combination with Twin Injection strengthens the OVI effect by an optimized atomization and vaporization as well as an optimized targeting. With port and direct gasoline injection, Bosch combines gasoline direct injection with gasoline port fuel injection.
The reason for this unusual partnership is: combining two normally separate approaches for fuel injection creates one innovative system where the strengths of the partial systems perfectly complement each other. In this particular case, this leads to advantages in terms of fuel consumption and emissions — both under partial and full load. Each of the two partners lets the other take the lead when it is time to show their respective forte.
Each injection system delivers its benefits in terms of fuel efficiency and the number of emitted particles PN under different operating conditions. Gasoline port fuel injection shines with reduced friction losses in partial-load operation, while direct injection excels close to full load with its increased knocking limit. Combined, the systems provide an additional reduction in particle emissions — division of labor at its best. But gasoline port fuel injection adds even more advantages to the beneficial partnership.
With its good mixture homogenization, the system generates fewer particles, has lower noise levels and consumes less fuel in situations with low engine load thanks to its lower friction loss compared to direct injection. With port fuel injection, the cleaning effect of the intake manifold ports and valves promotes higher exhaust gas recirculation rates Improved noise characteristics at low speeds Increased limp-home capability. Also, port and direct gasoline injection is future-proof: combining both systems and optimizing the engine operation strategy can make a valuable contribution to additional savings in terms of fuel consumption and new legal limits for emissions such as EU6d.
Bosch has years of experience regarding large-scale production projects involving port and direct gasoline injection and offers a comprehensive product portfolio of components, development and system simulation. Are you interested in our solutions? Please don't hesitate to contact us! We will be glad to help you. An increasing demand for comfort and safety drives the global technological shift from manual to automatic transmissions. It is expected that the number of vehicles with compressed natural gas CNG powertrain systems will continue to rise in the years to come.
The primary advantage of the diesel common-rail system is the enormous flexibility of the injection pressure and the injection timing. Solutions Powertrain Gasoline Gasoline port fuel injection.
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