Bosch high-pressure fuel pumps deliver OE-level form, fit, function

Engines equipped with GDI systems generate the air/fuel mixture directly in the combustion chamber via high-pressure injectors. Due to higher compression, injecting the fuel directly into the combustion chamber improves cooling and engine efficiency, and ultimately leads to increased fuel economy, torque and overall vehicle performance.

“The heart of the GDI fuel system is the high-pressure fuel pump. Its function is to generate the system pressure required for high-pressure injection,” said Stephen Albert, product manager port fuel and gasoline direct injection systems, Robert Bosch LLC, Automotive Aftermarket North America.

Located off of the fuel rail, the high-pressure pump takes fuel supplied by a low-pressure, in-tank electric fuel pump operating at 65-80 psi and generates fuel pressure of up to 2900 psi (200 Bar) necessary for high-pressure injection. To put it in layman’s terms, the approximate amount of system pressure generated by a high-pressure fuel pump is equal to the weight of a three-ton truck on an area the size of a man’s shoe heel – roughly two square inches.

“In this environment, the high-pressure injectors atomize the fuel extremely rapidly to provide the optimum mixture of fuel and air directly into the combustion chamber. This demand-controlled operation optimizes fuel efficiency,” Albert explained.

The unique design of Bosch High-Pressure Fuel Pumps released for the aftermarket is based on a single-barrel, all stainless steel concept using a minimum of material and advanced manufacturing processes. They are equipped with an integrated pressure limiting valve as a failsafe feature to mitigate premature failure of the unit.

“GDI system repair can be complicated at first but is not impossible,” said Albert. “With the help of proper training, application of correct procedures and the use of top quality components, automotive service technicians can properly diagnose and repair GDI system failures successfully,” he said.

Bosch has been involved with GDI since the 1950s. In 1954, the Mercedes-Benz W196 Formula 1 race car featured one of the first mechanical direct injection systems from Bosch.

Based on its decades-long R&D experience in gasoline direct injection, Bosch offers the aftermarket a comprehensive package of diagnostic tools, parts, training and informational videos to assist in the successful service and repair of GDI systems. An informative and educational website dedicated to Bosch GDI service concepts is scheduled for release soon. As a leading OE manufacturer of direct injection components, Bosch has taken the lead in providing the market a complete Parts, Bytes and Services solution to ensure full confidence during repair.

Driven by strict emission laws and a growing demand for low fuel consumption, GDI-equipped vehicles are now increasingly seen on roads worldwide. “Currently, 42 percent of new vehicles manufactured in North America are equipped with GDI. By 2021, we estimate that approximately 72 percent of new vehicles that come off the production lines will utilize a combination of port fuel injection (PFI) and GDI,” said Albert.

“Combining GDI with PFI delivers cleaner, quieter, more efficient engine operation. It reduces cabin noise for the driver at idle or during low-speed operation, and reduces carbon buildup to ensure better service life,” Albert said. “This is especially beneficial for high horsepower vehicles,” he added.

Bosch offers high pressure fuel pumps for over six million Domestic and European vehicles in operation in North America.

For more information, please visit: http://www.boschautoparts.com/auto/fuel-injectors/high-pressure-pump.

Bosch is a proud supporter of the Automotive Aftermarket Suppliers Association’s Know Your Parts® education and awareness campaign. This initiative promotes the importance of quality brand name aftermarket parts backed by full service suppliers, and its impact on delivering reliable products to today’s motorists. For more information visit: www.AASAKnowYourParts.org.

About Bosch: 

Having established a regional presence in 1906 in North America, the Bosch Group employs some 28,700 associates in more than 100 locations, as of April 1, 2015. In 2014, Bosch generated consolidated sales of $11.3 billion in the U.S., Canada and Mexico. For more information, visit www.boschusa.com, www.bosch.com.mx and www.bosch.ca.

The Bosch Group is a leading global supplier of technology and services. It employs roughly 360,000 associates worldwide (as per April 1, 2015). The company generated sales of $65 billion (49 billion euros) in 2014.* 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 subsidiary and regional companies in some 60 countries. Including its sales and service partners, Bosch is represented in roughly 150 countries. This worldwide development, manufacturing, and sales network is the foundation for further growth. In 2014, Bosch applied for some 4,600 patents worldwide. The Bosch Group’s strategic objective is to create solutions 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 www.bosch.com, www.bosch-press.com and http://twitter.com/BoschPresse.