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Control & Monitoring

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Giro Engineering
Diesel Engine Components

Optimal control technology for any type of gas engine

The KRONOS 20 is an electronically controlled mixture control system for adjusting speed-dependent and load-dependent lambda values in order to achieve ideal engine behaviour under all operating conditions. In the various closed loop versions, engine power, lambda or NOx sensors can be used as feedback signals to automatically correct fluctuations in gas quality and engine load. The main application areas are natural and biogas engines, which are supplied by a zero pressure controller.

For system configuration please provide application specific information: Order Information.

  • Overview Gas Mixers
  • GM 30
  • GM 50
  • GM 100
  • GM 140
  • GM 200
  • GM 300

Gas Mixers

Gas mixers are indispensable components in the mixture control systems of gas engines. They guarantee the desired ratio of fuel gas and air regardless of the operating conditions.

Gas Mixer Uebersicht

  • Suitable for naturally aspirated engines and turbocharged engines
  • Constant mixture ratio
  • Suitable for all gas types
  • Uniform air-gas-mixture
  • No maintenance required
  • Low drop in pressure

GM 30

Technical data

  • Output range stoichiometric: 20 ... 75 kW
  • Steady state torque: 15 ... 50 kW
  • Operation temperature: -20 ... +150 °C
  • Max. boost pressure: 4 bar abs.

GM 50

Technical data

  • Output range stoichiometric: 35 ... 125 kW
  • Steady state torque: 25 ... 85 kW
  • Operation temperature: -20 ... +150 °C
  • Max. boost pressure: 4 bar abs.

GM 100

Technical data

  • Output range stoichiometric: 70 ... 250 kW
  • Steady state torque: 50 ... 170 kW
  • Operation temperature: -20 ... +150 °C
  • Max. boost pressure: 4 bar abs.

GM 140

Technical data

  • Max. boost pressure: 140 ... 500 kW
  • Steady state torque: 100 ... 340 kW
  • Operation temperature: -20 ... +150 °C
  • Max. boost pressure: 4 bar abs.

GM 200

Technical data

  • Max. boost pressure: 330 ... 1,200 kW
  • Steady state torque: 230 ... 840 kW
  • Operation temperature: -20 ... +150 °C
  • Max. boost pressure: 4 bar abs.

GM 300

Technical data

  • Max. boost pressure: 750 ... 2,250 kW
  • Steady state torque: 500 ... 1,500 kW
  • Operation temperature: -20 ... +150 °C
  • Max. boost pressure: 4 bar abs.

More information

Technical drawing on request

Output Range

Data Sheet

  • Lambda Control
  • Speed sensors

Lambda Control

The KRONOS 20 AFR control unit is part of the KRONOS 20 electronic mixture formation system, in which the lambda values can be determined within a certain range depending on the speed/load. This improves the engine behaviour under all operating conditions. In the closed control loop, the lambda values are adjusted using a power signal or an exhaust gas sensor. Step-type sensors, broadband sensors and NOx sensors can all be used. Any fluctuations in the ambient conditions (e.g. gas quality and gas pressure) are fully compensated.

Technical data

  • Power supply: 24 VDC
  • Voltage range: 10 ... 32 VDC
  • Power consumption: max. 1 A
  • Operating temperature: -40 ... +80 °C

Engine Types & Applications

Gas EnginesGas Engines

CHPCHP

GensetsGensets

Speed sensors

Both inductive sensors and Hall sensors are available with different lengths and thread sizes. Thanks to their robust design, inductive sensors are ideal for use in harsh ambient conditions.
Compared to inductive sensors, the advantage of Hall sensors is that the output signal is independent of the speed and the distance from the sensor.

  • E-LES Gas Valves
  • E-LES 30 LC
  • E-LES 50 LC
  • E-LES 80 LC
  • E-LES 30 SMC
  • E-LES 50 SMC
  • E-LES 80 SMC

Electronically Controlled Gas Valves

The electronically controlled E-LES gas valves are a great solution for gas engines. Driven by a stepper motor, they are available both with (E-LES LC) and without (E-LES SMC) lambda control. They are located in the gas line downstream of the zero-pressure governor, and are connected to the inlet of the gas mixer. They can be used to set the required gas volume very precisely in every operating state and correct it as required.

Electronically AFR Control Uebersicht2

E-LES 30 LC

Technical data

  • Flow diameter: 32 mm
  • Length: 73 mm
  • Total height: 180 mm
  • Weight: approx. 2 kg
  • Admissible pressure of fuel supply: max. 0.1 bar

E-LES 50 LC

Technical data

  • Flow diameter: 75 mm
  • Length: 166,7 mm
  • Total height: 221 mm
  • Weight: approx. 5 kg
  • Admissible pressure of fuel supply: max. 0.1 bar

E-LES 80 LC

Technical data

  • Flow diameter: 82 mm
  • Length: 252 mm
  • Total height: 336 mm
  • Weight: approx. 12 kg
  • Admissible pressure of fuel supply: max. 0.1 bar

E-LES 30 SMC

Technical data

  • Application rang: 5 ... 130 kW
  • Positioning time for 0 - 100 %: 2.5 s
  • Admissible pressure of fuel supply: max. 0.1 bar
  • Weight: approx. 2 kg

E-LES 50 SMC

Technical data

  • Application range: 5 ... 130 kW
  • Positioning time for 0 - 100 %: 4 s
  • Admissible pressure of fuel supply: max. 0.1 bar
  • Weight: approx. 5 kg

E-LES 80 SMC

Technical data

  • Application range: 450 ... 1,750 kW
  • Positioning time for 0 - 100 %: 8 s
  • Admissible pressure of fuel supply: max. 0.1 bar
  • Weight: approx. 12 kg

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