Embedded automotive drive electronics platform with Real-Time Processor and Reconfigurable FPGA
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The NI DI Driver Module contains three solenoid direct injector drivers. Two Piezo injectors can also be driven by this module and the details of that are discussed later in this section. The driver channels share some circuitry, making it impossible for injection events to overlap among channels within the same module. If injection events with different injectors must overlap, then multiple modules should be employed. There is a high voltage circuit and a battery voltage circuit which drive current to the injector load. The high voltage and battery voltage drive circuits are shown below in the simplified schematics for operating various types of injectors.
The NI Direct Injector Driver Module Kit provides a CompactRIO (cRIO) module for driving a wide variety of diesel and gasoline direct injectors, including many piezo actuated injectors. The kit includes LabVIEW FPGA and RT VIs for controlling the driver channels. Each DI driver channel is individually controlled for timing and duration, but channel operation may not overlap. The module cannot control piezo and solenoid actuator types simultaneously. When configured for piezo mode, channel 3 is not available and must have its terminals shorted together.
