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WikiBosch EDC16History

Bosch EDC16

Revision 5

by llandowtuninguk@gmail.com
Organise the existing family under its Bosch system index.

This is a historical revision. Read the current page or return to its history.

Page organisation in this revision
Page type
ECU hub
Subject
ECUs
Parent
Bosch EDC
Applies to
No ECU-specific applicability
Tool groups
None
Manufacturers
None

What is EDC16?

Bosch EDC16 is a family of electronic diesel engine management systems. Volkswagen describes its V10 TDI EDC16 as torque-oriented: the ECU coordinates requests from the driver and other vehicle systems, then works out how to deliver the resulting torque through fuel injection and air control.

Torque and injection quantity

Both matter. A request or limit may be expressed as torque in newton metres (Nm), while the fuel needed to produce it is represented as an injection quantity, often milligrams per cylinder per combustion cycle (mg/stroke). Limits on available air and other operating conditions can reduce the quantity delivered. The exact signals, maps, units and order of calculations depend on the ECU software.

Family scope

EDC16 covers different manufacturers, engines and injection systems. Volkswagen SSP 304 describes a unit-injector V10 TDI; SSP 350 identifies an EDC 16 C common-rail V6 TDI. Do not assume their injectors, map addresses or calibrations are interchangeable.

Start with EDC16 torque fuel and tuning basics for the torque model, common limits, fuel and boost control, and a practical starting point.

Further EDC16 references

For documented Volkswagen and Audi unit-injector and common-rail examples, see EDC16 injection systems and vehicle examples. For scan-tool interpretation and a vehicle-specific Citroën bulletin, see EDC16 diagnostic data and configuration examples. The variant comparison explains application, tool and software distinctions.

Example diesel ECU circuit board

These photographs show the logic and power sides of an opened common-rail electronic diesel control unit. They are included for general hardware context: the source does not identify the EDC generation or variant, so they should not be used to identify a particular EDC16 model.

Logic and microcontroller side of an opened common-rail electronic diesel control unit
Logic and microcontroller side. Photo: Techie / Techie2, Wikimedia Commons; licence: CC BY-SA 3.0; unmodified.
Power and actuator side of an opened common-rail electronic diesel control unit
Actuator and power side. Photo: Techie / Techie2, Wikimedia Commons; licence: CC BY-SA 3.0; unmodified.

Sources

Curated reference notes. Applicability follows the cited sources; hardware testing by this wiki is not implied.