Device for the alternative operation of an internal combustion engine with petrol or liquid gas

摘要

In an internal combustion engine (10) which may be operated with either petrol or liquid gas, a reversing switch (18) is provided by means of which the operating mode can be switched between petrol/liquid gas. The reversing switch (18) thereby acts on an ignition system (24) of the engine (10) in such a way that when switching from petrol to liquid gas operation the ignition point is advanced by a predetermined value. <IMAGE>