TECH SYMBIO

LPG/CNG Controllers

TECH SYMBIO
TECH ONE
TECH DUO
TECH-200
TECH-300
TECH-300 OBD

LPG/CNG Controller

TECH SYMBIO

The TECH SYMBIO series is a new controller platform created to meet the latest requirements of engineers designing gas injection systems for engines with direct fuel injection. TECH SYMBIO can operate with two injection systems. This allows gas installation in vehicles equipped with combined injection — using both direct and indirect petrol injectors. The series supports naturally aspirated engines, turbocharged engines, and Valvetronic-type systems.

The control unit is based on a 32-bit automotive microprocessor, ensuring stable operation in temperatures from –40 to 120 °C. It features a built-in OBD module with a CAN data bus, which makes system calibration simple, fast, and precise. Installation has been simplified thanks to the ability to freely assign input and output injector channels. Electrical wiring designed for the required current load guarantees long-term, reliable performance even under harsh conditions inside the engine bay.

  • Supply voltage: min. 10 V – max. 16 V;
  • Quiescent current: < 10 mA;
  • Max current: 4 cyl. – 15 A, 6 cyl. – 20 A, 8 cyl. – 25 A;
  • Operating temperature: from -40°C to +120°C;
  • Gas injection support for up to 8 cylinders – depending on the controller version;
  • Control unit based on a 32-bit automotive microcontroller;
  • Built-in OBD module with CAN data bus;
  • Self-diagnosis, error detection, and installation fault detection;
  • Corrections based on gas temperature, reducer, gas pressure, engine speed, MAP pressure, and fuel pressure;
  • Gas dose calculation based on a system of built-in corrections;
  • Intelligent automatic error clearing;
  • CAN protocol support (11/500; 29/500; 11/250; 29/500);
  • Ability to collect data for mapping during driving without the need to connect a PC;
  • OBD Scanner function – ability to read basic diagnostic data, settings, and to read and clear OBD errors;
  • Automatic real-time LPG/CNG gas injection timing corrections based on parameters read from the gasoline controller’s OBD bus;
  • Full short-circuit and overload protection;
  • Plastic housing – 4 cyl., aluminum – 6 cyl. and 8 cyl.;
  • Compatibility with TECH-YETI GT injector (opening time: < 1.3 ms; closing time: < 1.2 ms);
  • Compatibility with additional, external electronic devices
  • Built-in high-pressure fuel sensor emulator;
  • RGB touch switch; Support for dual injection systems 4/4, 6/6, 8/8;
  • Ability to operate in vehicles equipped with indirect injection.