SAFETY CONTROL IN PERFECT POWER PIGGY-BACK UNITS

Perfect Power Articles.

 

This applies to engine safety. Standard stock cars have a few safety devices built in, which mostly results in a dashboard display or a ‘limp home’ operating mode. Once you have modified an engine or you have special requirements, you need to think about protecting the engine against any mishap. The mishap can be deliberate or a failure. It doesn’t matter: the engine must survive.


Here are some concerns: Too high RPM, Too high boost pressure, Too high temperature, Too low temperature, etc.


It is most of the time easy to detect a fault, but sometimes difficult to take evasive action. This is the reason why the motor manufacturers indicate the fault, and the driver must take the action. There are also legal concerns: rather blow up the engine than putting the driver at risk.


All the units with a set-point procedure (XMS4, SMT8) can perform a switching action. This action can switch on a warning light, or switch off the fuel, or switch off the ignition. It switches therefore the action is severe.


The piggyback range of products (SMT8, SMT8L, and SMT8T) has a protection feature which has three parts:

 

  • MODIFY: Modify a signal in proportion to the exceeded limit
  • CUT: Cut a signal if a limit is exceeded
  • RETARD: Retard proportional to the exceeded limit


The CUT is a switching operation and it is severe. All other actions are proportional (soft). In addition a time can be set in which the limit can be exceeded without any action.


This means you can drive full throttle for 10 seconds, or the boost can high for 2 seconds, or the RPM can be high for three seconds and then the ignition is retarded slowly. Great stuff!


 

SUMMARY

A modified engine requires some kind of protection in addition to the manufacturers indications because of the modification it is more prone to a mishap.

 

THE FOLLOWING PERFECT POWER PRODUCTS HAVE SAFETY CONTROL:

 

VISIT THE FOLLOWING LINKS FOR MORE INFORMATION ON SAFETY CONTROL: