SECM112

Module

Overview

The ECM-OH is part of the engine management system for on-highway applications, which can include L6 4-stroke CNG intercity transit applications, L6, 4-stroke LNG intercity transit applications, and L4 4-stroke commercial vehicle applications. The module is capable of full authority digital engine control (FADEC) consisting of fuel, spark, and air delivery to the engine. Additional inputs and outputs are available to control other system functions, as defined by software. This unit provides 112 connector pins with inputs, outputs, and communications interfaces that support a wide variety of applications.

The ECM-OH features two microprocessors in one rugged production intent housing. The module contains a main MPC5644 120Mhz processor along with a S12G fixed point processor, which can provide question-answer type challenge to the main processor. Both micros are connected on CAN1.

The ECM-OH is part of the MotoHawk Control Solutions ControlCore® family of embedded control systems. The ControlCore operating system, MotoHawk® code generation product, and MotoHawk’s suite of development tools enable rapid development of complex control systems. Application code for both processors is developed in MotoHawk which allows the application developer to create applications directly in Simulink and build with a one step 'CNTL-B' build. The two controllers act like separate controllers in terms of programming. Then, the program can be flashed onto the micro using Woodward's MotoTune, Toolkit, or through industry standard 3rd party tools via xCP, or ISO15765.

Calibration can be done with Woodward's MotoTune or Toolkit or with industry standard 3rd Party tools through xCP.

Each controller is available in ‘F’ (Flash) or ‘C’ (Calibratible) versions. Flash modules are typically used for production purposes. Calibratible modules are typically for prototyping/development only; they can be calibrated in real time using MotoTune, ToolKit, or industry standard 3rd party tools via xCP.

Power Requirements

All versions of the ECM-OH Control require a voltage source of 8 to 32Vdc (12Vdc or 24Vdc nominal).

Control Features

Standard features common to both models are:

• 2 engine speed inputs: camshaft and crankshaft speed (software configurable for variable reluctance (VR) magnetic pickup sensor or Hall effect proximity sensor inputs)
• Up to 6 frequency inputs (some share analog resources)
• Up to 33 analog inputs
• 3 switch inputs
• 2 HEGO sensor inputs
• 2 LSU sensor inputs (also known as UEGO sensors)
• 2 knock sensor inputs
• 3 transducer power outputs providing +5V (350mA & 100mA) and +12V (100mA)
• 2 H-bridge driver outputs providing 10A and 5A drive capability and current sense feedback
• 6 Injector drivers providing software configurable peak and hold current levels (up to 7A/2A)
• 6 ignition coil drivers
• MPRD (Master Power Relay Driver) low side output
• TACH low side output
• 16 low side output drivers (1 with current sense feedback)
• 3 CAN (Controller Area Network) communications ports
• 4K-byte serial EEPROM for tunable parameter storage
• Auxiliary micro with 128k of flash, 8k of RAM, 4k of EEPROM