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

CNG engine-management system

In or­der to be suc­cess­ful on the market, in ad­di­tion to their ad­van­tages re­gard­ing environ­mental compati­bil­ity CNG vehicles must also fea­ture good dy­namic re­sponse, high driv­ing com­fort, and suitabil­ity for every­day use. Bosch sup­ports these re­quire­ments by de­vel­op­ing an engine-man­agement sys­tem for CNG vehicles. This com­prises the engine-man­agement ECU for the bi-fuel sys­tems (CNG and gas­oline), as well as com­po­nents like pressure regu­lator module, tank valve, low- and high pressure sensors. During de­vel­opment, the em­pha­sis was on two main points. Firstly the switch­ing be­tween CNG and gas­oline op­era­tion had to take place with­out any ef­fects on torque, and sec­ondly, a simple OBD concept was needed. The compo­nents were manu­factured and tested ac­cording to Bosch quality standards, and certi­fied in line with the valid ECE-R110 Standard for CNG vehicles.

 
Pressure control module and tank valve für compressed natural gas vehicles
EngineManagement