Engine Control Products
Office of Automotive Engineering

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Southwest Research Institute (SwRI) has been developing electronic widgets to support powertrain R&D for more than a decade. As the family of specialty products began to grow, a client asked what we called them. The response was, “They are just a bunch of transistors.” The descriptive acronym, BOT, stuck.

Hardware Products

Each BOT™ module is designed with a specific purpose in mind, but because the software and I/O are so flexible, new uses and features arise frequently. Our most popular BOT modules include:

C-BOT™ Module

Converter BOT is a flexible engine position-tracking module designed specifically to translate arbitrary cam and crank patterns into common OEM patterns. Featuring a dual-channel VR signal conditioner and Xilinx® FPGA, the C-BOT may be configured by SwRI engineers to accommodate any standard or custom pattern.

DI-BOT™ Module

Programmable Injector Driver BOT (DI-BOT) is an advanced injector driver capable of driving four injectors and two auxiliary loads with fully programmable current waveforms. The auxiliary channels provide the ability to drive devices such as high-pressure fuel metering pumps. Optically isolated inputs allow any controller to actuate advanced injectors

H-BOT™ Module

Dual H-Bridge BOT is a two channel power driver module. It uses H-bridge topology and pulse width modulation enabling motors or any DC load to run at variable speeds, either forward or reverse. The module contains two, independent monolithic ICs which provides flexibility and reliable high power operation. Typical applications include electronic throttle body control, PWM controlled valves, bidirectional solenoids, and reversible motor mechanisms.

LSD-BOT™ Module

The low side driver BOT (LSD-BOT) is an advanced driver capable of driving eight loads through low side switching. The LSD-BOT can be configured for solenoids, injectors, and ignition coils. Logic level inputs with protection allow any controller to drive high current low devices.

RPECS™ System

Our Rapid Prototyping Electronic Control System (RPECS) is an advanced programmable controller for custom control and data acquisition applications. Built on more than 20 years of test and engine control technology, RPECS is the latest in a successful line of expandable, rapidly customizable, high I/O count, prototype control systems. Developed using PC-based embedded components to maximize performance without high costs, RPECS is capable of executing complex real-time control and data acquisition algorithms to solve many custom applications.

Software Products

MATLAB/Simulink®-based engine control software is available to accelerate client's open ECU development projects. SwRI has integrated experience from years of engine R&D programs that all require similar underlying control features. These algorithms are available to run on any Simulink-compatible control system. The Simulink source code is provided with no black boxes so your team can modify the code directly or with SwRI's support. This software provides the basic ability to operate any configuration of compression ignition (diesel) or spark-ignited (gasoline) engine. Additional information and a list of standard features are available.

Related Terminology

electronic controls  •  control modules  •  control systems  •  rapid prototyping control system  •  C-BOT  •  D-BOT  •  DI-BOT  •  H-BOT  •  LSD-BOT  •  RPECS  •  H-bridge  •  fuel-injector driver  •  programmable controller  •  real-time control  •  engine control technology  •  data acquisition

Benefiting government, industry and the public through innovative science and technology
Southwest Research Institute® (SwRI®), headquartered in San Antonio, Texas, is a multidisciplinary, independent, nonprofit, applied engineering and physical sciences research and development organization with 9 technical divisions.