Linhai ARCHON 400, Service Manual

Page: 98 / 218

CHAPTER 3 ENGINE
BUCK 450 SERVICE MANUAL 20.0
3.12.4.2 Installation Requirements
Dynamic Torque Requirement: The sensor shall be
hand into the application and then driven by a
driver with a maximum no load speed of 400 rpm or
installed to the desired torque by a hand torque
wrench (5/8” hex). The recommended installation
torque is:
●
Minimum: 20 N · m
●
Maximum: 25 N · m
●
Static Torque Requirement: The torque require-
- d to remove the sensor from the mating hole shall
be within 200% of the installation torque mentioned
above.
3.12.5 Oxygen Sensor
3.12.5.1 Description and Working Principle
This sensor is a device for monitoring the residual
oxygen in the exhaust of an internal combustion
engine. It is the feedback element for engine closed
loop control.
3.12.5.2 Technical Parameters
●
A/F ratio rich threshold:
＞
750 mVDC
●
A/F ratio lean threshold:
＜
120 mVDC
(These parameters as above are measured basing
on 450°C (engine dyno), typically on 70% duty at
10Hz and under 13.5V);
●
Heater part resistance:9.6±1.5Ω (This
parameter is measured basing on 21°C);
●
Operating temperature range: 260-850 °C.
3.12.5.3 Fuel Quality Requirements
Pb≤0.005g/L
P≤0.0002g/L
S≤0.04% (weight proportion)x
MMT≤0.0085g/L
Si≤4ppm
CHAPTER 3 ENGINE PAGE. 3- 73