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
Technical Paper
1999-25-0173
Sector:
Event:
ISATA 1999
Language:
English
Abstract
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.