Exhaust Manifold - Geely EC718 2009 Workshop Manual

2-430 Exhaust System JL4G18-D Engine
2.7.2 Description and Operation

2.7.2.1 Exhaust Manifold

Exhaust manifold used in this engine is a monolithic four-port
manifold, which can be removed from the rear. The function of
exhaust manifold is to exhaust gases after combustion with the
minimum back-pressure. Pre-Oxygen sensors (HO S) are
2
installed in the three-way catalytic converter front end.
2.7.2.2 Three-Way Catalytic Converter
Three-Way catalytic converter is similar to the appearance of
the muffler, however, inside the stainless steel shell there is
honeycomb-like ceramic substrate in the direction of the
exhaust gas. Ceramic liner carriers have been surrounded by
the liner, which is used to retain the ceramic carrier and prevent
any contact or collision. Each end of the converter has a mesh
seals to prevent air pollution and the pad corrosion.
EC718/EC718RV EC715/EC715RV 10/2009