TORQAMP Control Box

The TORQAMP possibilities are endless and therefore everyone likes to have the control of the TORQAMP on his or hers own way.

That's why we developed the Control Box. Based on your input, measurements and software, the box will control how fast the TORQAMP rotates and boosts.

 

The TORQAMP Control Box is Open-Source and works stand-alone. So the control box does not influence your car ECU. 

 

 

Open-Source

The inputs of the Control Box:

  • Throttle Position (TPS or other 0-5V signal)
  • Air pressure
  • PWM (or other time based signal)

The output of the box is the rotational speed of the TORQAMP.

 

The control is provided by the Arduino Nano (Atmel ATmega328).

Because it is Arduino based, it is simple to implement and simple to alter the settings.

The measurements of the sensors can easily be read out with a notebook.

 

The design is free accesable and could be downloaded via the link below.

The schematic and board are developed in EAGLE.

 

 

Implementation

The way you want to use the Control Box is highly depending on your implementation of the TORQAMP.

 

Naturally Apsirated boosting

When you have a TORQAMP on your naturally aspirated engine and you want to control the speed of the compressor with your throttle pedal.

 

Cars are already equipped with TPS sensors for decades, so it is easy to tap into this singal and directly connect to the Control Box.

You only have to connect 4 wires from your car:

  • GND from battery
  • 12V (extra nice to take a switched one from your car radio)
  • GND from TPS sensor
  • Signal from TPS sensor

This is the easiest way if you want to control the boost based on the throttle position.

In the software you can find a table which links the input of the TPS to the compressor speed.

 

NOTE: We don't recommend to turn the compressor at low TPS values because you can simply add more air into your engine by opening the throttle valve. This will also drain your battery a bit. Take for example at 75% TPS signal a slow rotating compressor and at 100% TPS signal a fast rotating compressor. 

NOTE: Boosting at low air mass flow will damage the TORQAMP compressor due to the surge phenomena.

 

 

Turbo Builds

The TORQAMP will work great with large turbo builds.

It spools up the turbo at much lower engine RPM's providing a huge torque gain.

For this we developed Boost Control.

Boost control is an additon on TPS control.

 

You only have to connect 4 wires from your car:

  • GND from battery
  • 12V (extra nice to take a switched one from your car radio)
  • GND from TPS sensor
  • Signal from TPS sensor

In addition you connect the hose to the intake manifold to measure the pressure.

The TPS value will now provide a boost setpoint you want to achieve as boost in your intake manifold (for example 40kPa = ~6psi boost at 75% TPS.

When you hit the 75% throttle position the TORQAMP will spool up till the pressure is achieved.

When the turbo takes over the boost pressure the TORQAMP will spool down.

 

NOTE: Don't try to achieve boost with a nearly closed throttle valve. This will damage the TORQAMP compressor due to the surge phenomena.

 

Programmable ECU

A lot of people are driving with an Open/Programmable ECU.

These ECU's sometimes have analog outputs which could be programmed via a map.

This is great and doesn't require the Control Box.

When your Open ECU has no analog output but only a PWM output the Control Box can convert this signal to a usable signal for the TORQAMP.

 

 

 

Downloads

Click here to download the Latest Version of the ControlBox  Click -> TORQAMP_ControlBox.zip

The PCB layout is version 0.3 and published 30-07-2019

The TPS Control software is version 0.1 and published 30-07-2019

The Boost Control software is version 0.1 and published 30-07-2019