Installation
The sensor can be installed permanently in the vehicle or removable for use in the dynamometer.
Fixed installation in the exhaust
The typical installation is a fixed installation in the exhaust pipe, a few centimeters after the manifold junction.
IMPORTANT
- Mount the sensor in a diagonal position with the cable output facing upward at a 10º to 80º inclination to avoid damage from water drops.
IMPORTANT
- Do not install too close to the engine output to avoid excessive heating.
- Be careful at the junctions between exhaust sections that are not welded. Due to the venturi effect, external air may enter which drastically alters the measurement.
ADDITIONALLY
Follow the instructions in the manufacturer's installation manual. Respect the recommendations, connections, fuse type, etc.
- The typical current consumption is less than 3A, and therefore the typical fuse will be 5A.
Installation in roller dynamometers
In roller dynamometers, an adapter can be used to mount at the exhaust pipe outlet. It consists of a pipe where the lambda sensor nut is welded.
NARROWBAND SENSORS
It is not possible to use narrowband
type sensors for mounting at the exhaust pipe outlet. Sensors of this type need to be installed close to the engine as they require the residual heat from the exhaust to function.
It should be long enough and have about 20cm of pipe to insert into the exhaust and another 20cm after to prevent external air return.
SUGGESTION
We recommend installing the sensor controller in a fixed location such as the dynamometer panel or in a portable box as shown in this image. The electrical power can be taken from the vehicle or can be supplied by an external power supply.
It can also be used on motorcycles.
Take care with the orientation of the sensor. The angle should be such that water drops that may come out of the exhaust do not damage it.
Innovate Motorsports sells an adapter that is inserted into the exhaust and works by the venturi effect to produce gas circulation.
INFORMATION
A more advanced sampling system can be built by mounting the sensor at a fixed point on the dynamometer and sampling the gases using a vacuum pump and a hose. For insertion into the exhaust pipe, a small diameter metal pipe would be used. The main advantage of this method is that it does not interfere much with the flow of exhaust gases.