ECM egrCAN, Инструкция по эксплуатации, Страница: 8 / 52

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The pressure sensor is not directly mounted on the intake manifold. An aluminum boss (P/N
12-07 (USA) or 12-14 (Metric)) is to be welded or epoxied to the intake manifold and a
stainless steel/teflon line ((P/N 12-08 (USA) or 12-11 (Metric)) runs between the boss and
the pressure sensor. The purpose of the stainless steel/teflon line is to isolate the pressure
sensor from the heat and vibration of the engine. The stainless steel end of the line attaches
to the engine and the teflon end attaches to the pressure sensor. General rules and
information for mounting are as follows:
•
O2 sensor mounting boss is 18mm x 1.5mm
•
Pressure sensor line mounting boss is ¼” NPT (USA) or ¼” ISO (Metric)
•
After welding a boss, run a tap through it to remove any thread distortion
•
Pressure sensor line is ¼” diameter (USA) or 6mm (Metric)
•
Pressure sensor must measure pressure within 2” (50mm) of the O2 sensor
•
Mount sensors so that no water will collect on or drain into either sensor
•
Do not modify the length or diameter of the pressure line
•
Locate pressure sensor where temperature is between -20 °C and 70 °C
•
Route cables away from hot, moving, sharp, or high voltage (spark) wires.
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Mounting “Exhaust Module” O2 and Pressure Sensors
Mount the exhaust O2 sensor using the short steel 18 mm boss (P/N 12-02) between 300 mm
downstream of exhaust valve and ten exhaust diameters upstream of exhaust exit.
Preferentially mount downstream of turbocharger and upstream of exhaust catalyst. egrCAN
supports the use of multiple exhaust modules.
As with the intake pressure sensor, the exhaust pressure sensor cannot be mounted directly to
the engine. A steel mounting boss (P/N 12-05 (USA) or 12-12 (Metric)) is provided which
should also be welded to the exhaust system within 2” (50mm) of the O2 sensor boss. The
pressure sensor connects to the exhaust through a supplied stainless steel/Teflon line (P/N
12-08 (USA) or 12-11 (Metric)). The purpose of the stainless steel/teflon line is to isolate
the pressure sensor from the heat and vibration of the engine. The stainless steel end of the
line attaches to the engine and the Teflon end attaches to the pressure sensor. General rules
and information for mounting are as follows:
•
O2 sensor mounting boss is 18mm x 1.5mm
•
Pressure sensor line mounting boss is ¼” NPT (USA) or ¼” ISO (Metric)
•
After welding a boss, run a tap through it to remove any thread distortion
•
Put antiseize on the threads of the O2 sensor and the thread of the pressure line fitting
that screws into the exhaust
•
Pressure sensor line is ¼” diameter (USA) or 6mm (Metric)
•
Pressure sensor must measure pressure within 2” (50mm) of the O2 sensor
•
Mount sensors so that no water will collect on or drain into either sensor
•
Do not modify the length or diameter of the pressure line
•
Locate pressure sensor where temperature is between -20 °C and 70 °C
•
Do not exceed 850 °C gas temperature at location of O2 sensor
•
Route cables away from hot, moving, sharp, or high voltage (spark) wires.