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Bosch Celebrates 75 Years of Diesel Injection

Diesel injection pumps by Bosch revolutionized diesel industry

FARMINGTON HILLS, Mich., Sept. 19 -- In 1927, Bosch revolutionized the diesel industry with the world's first large-scale production of diesel injection pumps and injectors. This technology allowed engine manufacturers to economically produce small, fast-turning diesel engines for trucks, buses and eventually automobiles.

When first introduced, diesel powerplants were expensive, inefficient and produced in small numbers for large, stationary power or ship engines. In 1921, Bosch began experimenting with diesel injection systems and by 1924 was able to test prototype diesel injection pumps. In March 1927, Bosch provided experimental injection pumps to engine manufacturers and in November 1927, Bosch began large-scale production for M.A.N., a German company that utilized the technology on its trucks. This marked the beginning of diesel's widespread use.

In 1936, injection pumps were developed for diesel-powered automobiles and in 1962, the first distributor injection pump was launched. By 1989 Bosch fitted the Audi 100 with the first direct injection system and in the 1990s, Bosch introduced high-pressure direct injection, the radial-piston pump (VP44), Common Rail and the unit injector system (UIS), all of which played an important role in the advancement of diesel.

Today, the compression ignition engine is widely accepted in Western Europe with nearly 36 percent of newly registered cars sporting diesel engines. The technology also is gaining popularity in the United States. Research shows that roughly one third of Americans would consider purchasing a clean diesel, if given the option.

"I am absolutely convinced that diesels are the best solution for the United States' energy debate," said Kurt Liedtke, president, chairman and chief executive officer, Robert Bosch Corporation. "The technology exists, fuel economy improvements are for real, emission levels are in check, the economy is ripe, consumers want them, and it's an answer that's ready today."

Bosch designs and produces precision automotive components and systems sold to vehicle and powertrain manufacturers worldwide. These include systems and components for gasoline and diesel injection, airbag components, ABS and conventional braking systems, telematics, as well as small motors, electrical and electronic equipment.

Robert Bosch Corporation, the wholly owned subsidiary of Robert Bosch GmbH, headquartered in Stuttgart, Germany, is responsible for North American operations.