Gasoline direct injection gdi engines typically emit higher particulate number pn emissions than conventional port fuel injected pfi engines due to the reduced time for fuel atomization in the combustion chamber and the greater possibility of fuel impingement on the cylinder surface. Bosch, your partner for gasoline direct injection comprehensive portfolio and extensive expertise in close collaboration with automakers, bosch brings to the table a comprehensive range of technologies as well as many years of experience and broad expertise. All bosch fuel injectors released to the aftermarket are oe fit, form and function, and are produced to oe specifications. New generation bosch gasoline directinjection systems pdf. Several german cars used a bosch mechanical gdi system in the 1950s, however. Certain mechanical fuel injection systems also utilize a mechanical fuel pump, typically some early gasoline fuel injection systems. Gasoline direct injection gdi, also known as petrol direct injection pdi, is a mixture formation. Bosch launched gasoline direct injection in 1951 and has remained at the cutting edge of the technology ever since. New generation bosch gasoline directinjection systems. In addition, the injection process can be designed with high flexibility. Bosch launched this technology in 1951, initially for the twostroke engine of the compact gutbrod superior car. Gasoline direct injection key technology for greater efficiency and.
The bosch ljetronic fuel injection system used in the porsche 912e is often referred to as the air flow controlled or afc fuel injection system. Diagnostics and spare parts from a single source product. This is why engines equipped with the bosch motronic med 7 direct petrol injection system will be used for the first time in the lupo fsi and golf fsi. File type pdf bosch electronic fuel injection systems shop manual understand and work with the fi bosch electronic fuel injection systems shop manual understand and work with the fi en bosch gasoline direct injection bosch gasoline direct injection as the key to clean and economical engines. Archived from the original pdf on 17 november 2017. A long history electronic direct injection main components of the gasoline direct injection new challenges with euro 6 legislation. This costeffective systems approach can reduce fuel consumption by as much. Gasoline direct injection bosch automotive aftermarket in uk. Ideal for downsizing concepts with turbocharging gasoline direct injection is a process whereby fuel is injected straight into the. Pdf gasoline engine management systems and components.
In 2012, bosch supplied more than 5 million gasoline direct injection systems. They were a few years before the wellknown mercedesbenz 300sl, though the benz engine was the first fourstroke direct injection gasoline engine in production. They are critical to the performance of a modern engine management system, and accuracy is vital for the effective running of the modern engine. New generation bosch gasoline directinjection systems due to future exhaust gas emission legislations, vehicle manufacturers need to implement additional emissions reductions. Instead of injecting the fuel on the back side of each intake valve for each cylinder gdi sprays directly into each cylinder. Gdi uses high pressure to deliver fuel at any point on the compression stroke.
Highpressure pump and highperformance control unit systems idea. Over a century of system expertise over a century of system expertise ljetronic components kejetronic components motronic components monojetronic components intake module gasoline direct injection the bosch success story in figures more than 100. Ignition and gasoline injection systems from bosch. Pdf this paper experimentally investigates the effect of water injection in the intake. The rapidly switching cri3 piezo injector allows short injection intervals which inject into the cylinder the amount of fuel required for economical combustion, independent of the driving situation. This is distinct from manifold fuel injection systems, which inject fuel into the intake manifold.
Most of the researchers wanted to work with diesel engine because of complexity in the gasoline engine. Gasoline portfuel injection pfi is the most common drive system for passenger vehicles worldwide, and will remain so beyond 2020. This system uses injectors that deliver an optimal amount of fuel at pressures as high as 20 mpa, and highprecision airfuel ratio. Kjetronic since its introduction, the kjetronic gasoline injection system has proved itself in millions of vehicles. Both the goliath gp700 e and the gutbrod superior 600 were propelled by twocylinder twostroke gasoline engines equipped with the direct fuel injection system manufactured by bosch. Bosch provides the system technolgy for gasoline portfuel. Bosch injection valves as the leading fuel delivery developer, bosch has a range of gasoline injection valves made to the highest original equipment specifications. Based on three factors market development, legislation and end customers bosch has developed a new generation of gasoline directinjection systems. Bosch electronic fuel injection systems shop manual. Originally, volkswagen adapted the ljetronic for the type 4 air cooled 411 engines sold in the united states due to more stringent emissions and fuel consumption regulations. Hesselman engines use the ultra lean burn principle. Today we provide technology for fuel supply, fuel injection, air management, ignition, engine control, and exhaust gas treatment as well as endtoend solutions for this drive system. Whether fourvalve technology, leanburn engine or fuelefficient gasoline direct injection the many applications of bosch spark plugs result from design modifications and the use of especially resistant metals such as platinum.
An early use of indirect gasoline injection dates back to 1902, when french aviation engineer leon levasseur pioneered it on his antoinette 8v aircraft powerplant. How the market for direct injection is developing, and why port fuel injection still has a future. To date, bosch has produced more than one billion lambda sensors. Buy bosch 0261500109 original equipment gasoline direct injection gdi fuel injector 1 pack. Gasoline direct injection key technology for greater.
Fuel injectors free delivery possible on eligible purchases. If mixture formation is homogeneous, the hdev5 highpressure injection valve makes a major. It is predicted that by 2020 a quarter of all vehicles will be equipped with this technology, which helps to achieve fuel economy targets in combination with downsizing and turbocharging. It also contributes to the current downsizing tendency. Gasoline direct injection engine to determine the combustion and. Bosch sees gasoline direct injection as far more than just an injection process. Piezo injector for commonrail systems bosch mobility solutions. Up to ten individual injections are possible per injection cycle. During the induction stroke, only the combustion air flows through the open intake valve. Nov 15, 20 bosch gasoline direct injection as the key to clean and economical engines. Bosch gasoline direct injection as the key to clean and economical engines. Gasoline direct injection introduced by bosch in 1937 on engines for aviation. Pdf experimental investigation of water injection technique in.
Apr 21, 2017 since direct injection is the future of fuel delivery, its a safe bet these are merely technological growing pains. Pfi port fuel injection bosch port fuel injectors pfi have a robust design and are capable of using ethanol fuel e100. The use of direct injection in this era was mainly aimed at increasing the vehicles performance through the charging cooling effect of direct fuel injection. Gasoline direct injection gdi, also known as petrol direct injection pdi, is a mixture formation system for internal combustion engines that run on gasoline petrol, where fuel is injected into the combustion chamber. In combination with downsizing and turbocharging, gasoline direct injection offers the potential to reduce consumption and co 2 emissions by some 15 percent. Gasoline direct injection engine management system this is an electronic control system for gasoline direct injection engines which are increasing as an effective means of fuel economy improvement. Gasoline direct injection jon feiner casey wagoner theory of gdi gasoline direct injection gdi is a new technology that follows port fuel injection pfi. Invented by bosch in 1976, lambda sensors have made a significant contribution to meeting todays demanding emissions standards. Bosch is regarded as the pioneer of gasoline direct injection. Bosch 0261500109 original equipment gasoline direct. Bosch has developed four individual approaches to improving gasoline port fuel injection.
Bosch has unique expertise in gasoline direct injection. Bosch developed an electronic fuel injection system, called djetronic d for druck, german for. As a result of increasing motorized mobility worldwide, coupled with the desire for lower fuel consumption and reduced emissions, gasoline direct injection is still regarded as a key technology with huge potential. Gasoline direct injection bosch mobility solutions. This development was a direct result of the advantages which are inherent in the injection of gasoline with regard to demands for economy of operation, high output power, and last but not least improvements to the quality of.
Meanwhile, you can benefit from boschs decades of experience as a technological leader in manifold injection. They have the potential to reduce fuel consumption by up to 15% compared to a similar engine with intake manifold injection. Bosch offers a complete system comprising a highpressure pump, highpressure rail with injection valve, a large number of sensors, and an engine control unit. Product information automotive spark plugs bosch global. Some, however, use a vane type fuel pump mounted directly to the injection pumpfuel distributor assembly. A long history electronic direct injection main components of the gasoline direct injection. Bosch continuously adapts spark plugs to further developments in engine technology. As a growing number of car manufacturers rely on direct injection series engines, the market for these systems is growing accordingly. Jun, 2017 new generation bosch gasoline directinjection systems. Direct petrol injection system with bosch motronic med 7. Gasoline directinjection engines generate the airfuel mixture in the combustion chamber. An efficient technology way back when gasoline direct injection. Mar 07, 2014 gasoline directinjection engines gdi 1.
838 303 144 451 248 1200 1509 628 1122 1441 448 863 556 1276 1565 731 1334 465 639 565 369 1464 229 533 712 322 35 1192 1253 313 1199 468 1480 1017 1411 1396 1048 834 174 776 540 362