Isuzu Tilt Slide FYJ2000 Instruction Manual page 89

Particulate Matter (PM) Catalytic Converter
The PM catalytic converter uses an oxidation catalyst to reduce the unburnt portion of
the exhaust particulate matter to water and carbon dioxide.
Generally speaking, the temperature of the exhaust from diesel engines is low when
the engine is idling, and as the oxidation catalyst is not activated in this condition,
various types of emissions accumulate within the catalyst. If the engine were then to
be revved up or the vehicle were to be accelerated from a standstill, the temperature
of the exhaust would rise rapidly, causing the accumulated matter to be forced out
instantly as white smoke.
The volume of white smoke emitted in this way tends to be proportional to the duration
of idling. And although the discharge of white smoke disappears gradually over the
course of one or two minutes, it obscures visibility in the area of the vehicle and poses
a hindrance to other traffic. As such, it can lead to accidents, and the appropriate care
should therefore be taken.
CAUTION
• Be sure to always use a high quality diesel fuel. In particular, an ultra-low sulfur
content diesel fuel (10 ppm or less sulfur content) is recommended. The use
of poor quality fuel, water removers and other additives can adversely affect
the PM catalytic converter and other engine components, leading to engine
malfunction and breakdown.
• The muffler and exhaust pipe will be extremely hot when the engine is operating
and immediately after it has been stopped. Avoid accidental contact with these
components when working in their vicinity to, for example, raise the cab and
load or unload cargo. Failure to observe this precaution can result in burns.
ADVICE
• The performance of the catalyst will temporarily drop when the engine has been
continually idling for an extended period of time.
• In order to prevent the emission of white smoke, and also in consideration of
environmental protection and the prevention of global warming, continuous
idling over long periods of time should be avoided.
IMPORTANT INFORMATION
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