Erdgas

Natural-Gas Motronic for sustainable mobility

Natural gas is a fos­sile fuel with a fu­ture. It is pro­duced without the need for ex­ten­sive re­fin­ing, and its com­bust­ion places far less load on the en­vi­ron­ment than gaso­line or die­sel. For the spe­cial re­quire­ments of natural-gas en­gines Bosch has de­vel­oped spec­ial tech­nolo­gies for gas in­jec­tion and en­gine man­age­ment.
A fuel with many advantages CNG engine-management system
The bi-fuel NG-Motronic ECU The NGI2 natural-gas injector

The NGI2 natural-gas injector

The first Bosch natural-gas in­jec­tion valve came onto the mar­ket years ago. The new NGI2 in­jec­tor was spe­cifi­cally de­vel­op­ed for the de­mands of auto­mo­tive CNG in­jec­tion. It fea­tures a se­ries of techni­cal in­nova­tions and serves as a bench­mark for gas me­ter­ing. The compo­nents through which gas flows are de­signed to cope with the high gas vol­umes and the high through­flow veloc­ity. Pres­sure los­ses be­fore the throt­tling point and op­era­ting noise are kept to a minimum by a spec­ial flow guide.

The solenoid can be trig­gered by a standard driver stage, and its sur­face has been spec­ially coated to pre­vent wear when used with oil-free gas.

With its spe­cial de­sign, the NGI2 is far super­ior to all pre­vi­ously known gas-in­jec­tion valves, and can be eas­ily inte­grated in exis­ting intake-mani­fold ge­ometries.

   
The new Bosch natural gas injector valve
Injector