Engine and Transmission Controls

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Engine Management Systems

Experience

New Eagle has the following experience:

  • Powertrain and vehicle modeling
  • Engine calibration
  • Model based controls development methods
  • Engine control algorithm development including port and direct injected fuel delivery, spark advance, bypass air, torque management, electronic throttle positioning, cylinder deactivation, cam phaser positioning, and all associated diagnostics.
  • Interactive transmission controls for conventional automatic transmissions, CVT, and DCTs
  • Extensive experience working to OEM production requirements, and utilizing industry best practice development methods and processes.
  • Experience working in partnership with Tier 1 suppliers, both domestically and internationally.
  • Supplier development, evaluation, and selection

Integrated Powertrain Control

The New Eagle Engine Management Control System uses MotoHawk model-based developed tools, process, and libraries. This is carried through from prototype through production. New Eagle has utilized the basic building blocks provided in this tool to create a set of high level function libraries, which can be used to construct a complete engine management system to customer specifications.

The high level building blocks in the New Eagle function library are shown below, along with a brief description of the functionality contained within:

  • Sensors

The hardware interface to all sensors, including resource assignments and basic ADC to engineering units conversions are performed here. Functions in this block include:

    • analog inputs (pressures, temperatures, voltages, positions, flow rates, switch states, etc.)
    • CAN inputs (same as above, but via CAN interface)
  • Actuators

The hardware interface to all actuators, including resource assignments and basic scaling to ADC units are performed here. Functions in this block include:

    • primary actuators (spark plugs, throttle body, fuel injectors, fuel pumps, "hardwired" lamps, etc.)
    • secondary actuators / accessories (alternator, fan , AC compressor, etc.)
  • Virtual Sensors

Within this block are the modeled sensors. The modeled sensors are state variables that have been created from available actual sensor information. This modeled sensor information is available to the higher level control algorithms. Examples of functionality contained within this block include:

    • modeled air charge
    • engine running timers
    • engine state determination (cranking, running, stall, etc.)
    • steady state determination
    • modeled temperatures
    • Lambda (wide range O2 sensors only)

Diagnostics Sensors Overrides This block provides a means of replacing the sensor value with a default value when the diagnostic algorithms deem it appropriate, based on the severity of the fault that has been identified.

Incorporate and / or modify existing New Eagle High Level Software / Controls (feedforward and feedback controls) for the specific application, and develop new functionality as required:

  • Airflow Control, including airflow and air charge estimation, airflow and throttle control, and learning / adaptive algorithms.
  • Fuel Control, including injector characterization, injector timing, steady state "open loop" fueling, transient "open loop" fueling, "closed loop" fueling, and learning / adaptive algorithms.
  • Ignition timing and dwell control, including "open loop" scheduling and "closed loop" control via knock sensor (if equipped), and learning / adaptive algorithms.
  • "Supervisory" type functions, including interpretation of operator requests, engine speed closed loop feedback, engine torque characterization and response to requests, torque management / limiting.
  • Implementation of diagnostics and "limp home" responses to ensure maximum availability to the customer in the case of a failure, to aid in servicing of the engine, in conformance to appropriate safety / emissions regulations, and to identify / respond to any additional failure modes as specified by the DFMEA .
  • Control of any other devices specific to this application (e.g. emissions devices, boost control for turbocharger applications, etc.)

Gasoline/Gaseous & Diesel Fuels

Gaseous Fueled Engine Controls

  • Automotive quality and prices for components including sensors, throttles, and engine controllers
  • Enhanced user interface for engine control and system installation and setup
  • Auto Start/ Stop features for scheduled duty cycle or remote engine and load control
  • Fuel efficiency advantages by utilizing automotive style torque control algorithms
  • OBD diagnostics to protect engine and other system components
  • Adaptive to multiple fuel usage
  • Adaptable controls for mobile and stationary applications
  • Experience with vapor lock handling and purge routines

OBD Diagnostics

  • Reduces service time from trouble shooting
  • Protects engine from harmful conditions such as low oil
  • Reduces engine and system component warranty costs through system protections
  • Prognostics available for scheduled service intervals
  • Remote communications for system status available
  • Ability to meet and exceed emissions requirements based on application

Dual Fuel Systems

  • Mileage dramatically increases due to burn rate and efficiency of diesel combustion
  • Market payback: occurs within months, depending upon price of fuel
  • Fully engineered gaseous fuel system
  • Seamless integration with existing vehicle systems via CAN:
    • Transmission
    • Chassis
    • Body
    • Instrument Clusters

Transmission and Driveline

New Eagle’s team of engineers has had vast experience in the development, integration and deployment of controls. With past experience including and not limited to Torque based Control, Chassis Powertrain Controls, Active Braking, ESP Stability, interaction based on Torque messaging, Powertrain coordination schemes optimization and more, for both diesel and gasoline engines, New Eagle, as Controls Integrators, seek to accomplish even more challenging projects in future. We believe we have the correct solution to meet the needs of all our customers, whether it is a specific demand or a simpler challenge. Not only that, our experience over the years has given us the capabilities to ensure success with high quality of reliability, robustness, performance and support for our projects.

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