Question 1

Technician A says that when an engine OEM uses a Bosch fuel injection system, Bosch service information software must be used to access engine datA.Technician B says that when an engine OEM uses a Bosch fuel injection system, Bosch diagnostic software must be used to troubleshoot engine problems. Who is right?

Accepted Answer

While Bosch does manufacture fuel injection systems and provides diagnostic software for their products, it's not exclusively necessary to use Bosch's own service or diagnostic software to access engine data or troubleshoot engine problems. Many engine OEMs integrate the use of Bosch components but also provide their own diagnostic tools and software that are compatible with Bosch systems. Therefore, neither Technician A nor Technician B is correct in asserting that Bosch software must be used exclusively.

Question 2

What is the term used by Bosch to describe their computerized diesel engine management systems?

Accepted Answer

Electronic Diesel Control (EDC) is the term used by Bosch to describe their computerized diesel engine management systems. This system controls the fuel injection process and timing to improve engine performance, fuel economy, and reduce emissions.

Question 3

Technician A says that Bosch was one of the original architects of the CAN 2.0 data bus system on which J1939 is based. Technician B says that Bosch and Intel partnered in the development of CAN 2.0. Who is right?

Accepted Answer

Bosch was indeed one of the original architects of the CAN 2.0 data bus system, and they partnered with Intel in its development, making both Technician A and Technician B correct.

Question 4

What is the Bosch Departronic system?

Accepted Answer

The Bosch Departronic system is related to the Diesel Particulate Filter (DPF), which is used to reduce particulate emissions from diesel engines.

Question 5

What is the Bosch Denoxtronic system?

Accepted Answer

The Bosch Denoxtronic system is a Selective Catalytic Reduction (SCR) system used to reduce nitrogen oxide (NOx) emissions in diesel engines by injecting a urea solution (AdBlue) into the exhaust stream.

Question 6

What is the common means of actuating Bosch fuel injection components by EDC drivers?

Accepted Answer

PWM (Pulse Width Modulation) signals are commonly used by Electronic Diesel Control (EDC) drivers to actuate Bosch fuel injection components. This method allows for precise control over the fuel injection process by varying the duration of the signal.

Question 7

What does the CR acronym mean in a Bosch fuel system?

Accepted Answer

Common Rail is a type of fuel injection system used by Bosch and other manufacturers, where a single rail supplies fuel to the injectors at a high pressure.

Question 8

Technician A says that the EPA MY 2010 Cummins ISB engine uses a Bosch CR fuel system. Technician B says that only Cummins InSite electronics can properly troubleshoot Cummins ISB engines regardless of chassis application. Who is right?

Accepted Answer

Technician A is correct because the EPA MY 2010 Cummins ISB engine does indeed use a Bosch Common Rail (CR) fuel system. Technician B is incorrect because while Cummins InSite is a proprietary diagnostic software for Cummins engines, other diagnostic tools and software can also be used to troubleshoot Cummins ISB engines, not just Cummins InSite.

Question 9

Technician A says that a black 9-pin J1939 connector may be used to access Cummins ISB electronics when the engine is installed in a Dodge chassis. Technician B says that a J1962 ALDL may be used to access ISB electronics in some chassis applications. Who is right?

Accepted Answer

The answer of Technician A says that a black 9-pin...

Question 10

Technician A says that Bosch fuel injection systems have been used by almost every North American engine manufacturer. Technician B says that Bosch engineers EDC to interface with OEM management software. Who is right?

Accepted Answer

Bosch fuel injection systems are indeed widely used across various North American engine manufacturers due to their efficiency and reliability. Additionally, Bosch engineers Electronic Diesel Control (EDC) systems to interface seamlessly with Original Equipment Manufacturer (OEM) management software, ensuring optimal engine performance and compatibility.

Quiz 42: Bosch Edc Systems