Deactivating one EUI at a time will identify misfiring or dead cylinders. As mentioned previously, current values are high, and for your own safety, do…
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Figure 6-17 illustrates the low pressure circuit for EUI-equipped engines. A gear-type transfer pump (9) delivers fuel from the tank (12) to the injectors (3).…
Both the 3100-3500 and C series engines employ EUIs that combine mechanical actuation with electronic control over fuel volume. Figure 6-15 illustrates an EUI in…
Figure 6-12 illustrates the EMS used on Caterpillar 3116, 3176, 3406E, and 3500 engines. It is a relatively simple system, without the bells and whistles…
Sensors provide data to the ECM and actuators carry out the computer’s commands. The primary actuators are the electronic injectors, part and parcel of any…
Advanced c-r systems for motor vehicles include the following sensors: • Temperature—ambient, coolant, intake air, fuel, and exhaust (upstream and/or downstream of turbo). Most of…
A controller area network (CAN) employs a single line, or bus, to convey data to all components that make up the network. Individual components—computers, sensors,…
While common rail is standard on most European auto and light-truck engines, Volkswagen remains committed to electronic unit injection. Figure 6-4 illustrates the Bosch unit…
Piezo injectors evolved from the flow-control technology developed by Siemens VDO for ink jet printers. Piezo crystals expand when excited by voltage and, conversely, generate…
Figure 6-2 is a schematic of a multi-hole, solenoid-operated injector of the type used on common-rail systems. The upper end of the spring-loaded needle is…