This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Research on a natural gas engine for use in a series hybrid vehicle drive
Published June 14, 1999 by ISATA - Dusseldorf Trade Fair in United Kingdom
Event: ISATA 1999
Natural gas engines are very promising for reducing exhaust gas emissions. When implemented in a series hybrid drive, transient engine operations can be avoided, which improves the efficiency of a lambda-1 control, combined with a three-way catalyst.
In The paper a specific small CNG engine and its control system will be described. Since the application was destined to work in a series hybrid drive, research was focussed on steady state operations of the engine. More detailed attention will be paid to the influence of ignition timing and air/fuel ratio (lambda value) on fuel consumption and exhaust gas emissions. Test results in some working points of the engine in steady state operation will show that the functioning of a three was catalyst can be very sensitive for small variations of the lambda control settings.