View Single Post
  #3  
Old 08-05-2016, 11:42 AM
parmas parmas is offline
Senior Member
 
Join Date: Jun 2013
Location: malta
Posts: 210
Default Re: Timed Duty : Direct Port Injection

Quote:
Originally Posted by rotrex View Post
Parmas, at at higher injector duty cyles at WOT, e.g. 70%, The Fuel injectors Are open most of the time. In a port injector set-sequential injection is mainly for low load and low to mid rev emissions. if your duty cycle hits 90% they are open 90% of the time, this means also open when the intake valve is closed . It is no big deal
Rotrex, as you said above 70% injectors are open MOST of the time and not ALL the time.

The 30% difference of a direct port injection system will result mainly in :

- Wetting valves/walls with methanol
- Valve Guide lubricity issues
- Extra Fuel consumption
- Enhance Corrosion of metals
- Resulting in 100% Relative Humidty (Hurts Evaporation)

Considering the next methanol build, I am planning to run and depend particularly on the direct port methanol setup while on boost. According previous datalogging injector duty cycles vary from low boost 30% to high boost 60%.

What would happen if I begin direct port injection at low boost ?
Reply With Quote