SYSTEM, METHOD AND ELECTRONIC CONTROL UNIT FOR METERING THE FUEL SUPPLY TO A COMBUSTION INSTALLATION OPERATING ON MORE THAN ONE TYPE OF FUEL

摘要

PCT No. PCT/NL94/00229 Sec. 371 Date Apr. 12, 1996 Sec. 102(e) Date Apr. 12, 1996 PCT Filed Sep. 21, 1994 PCT Pub. No. WO95/08706 PCT Pub. Date Mar. 30, 1995In order to supply a combustion installation, such as an internal combustion engine, with a second type of fuel, in particular LPG, in addition to a first type of fuel, such as petrol, a second control unit is coupled to a first or original electronic control unit of the engine. In response to first control signal values emitted by the first control unit, said second control unit, during operation on LPG, emits second control signal values for metering the LPG supply. With this arrangement the first control signal values received from the first control unit are compared with the values recorded by the second control unit during operation on petrol. The second control signal values emitted by the second control unit are now so adusted that, during operation on LPG, the first control signal values are still kept within a predetermined range (operating range) of the first control signal values recorded during operation on petrol.