Linhai M565Li T3 EFI, Service Manual

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CHAPTER 3 ENGINE
M565Li T3 EFI SERVICE MANUAL 20.0
CHAPTER 3 ENGINE PAGE. 3- 117
Typical Voltage: The sensor circuit operates with a DC voltage reference of
5 ±
0.1 VDC.
3.5.5.6 Sample Cleaning
When necessary the samples may be cleaned in isopropyl alcohol or gasoline
for one
minute with mating connectors in place and then air-dried
3.5.6
Oxygen Sensor
3.5.6.1 Description and Working Principle
This sensor is a device for monitoring the residual oxygen in the exhaust of an internal
combustion engine. It consists of the wide range sensor and stoichiometric sensor.
Usually we use stoichiometric sensor on the small engine. It is the feedback element for
engine closed loop control.
3.5.6.2 Appearance
The appearance of the Engine Oxygen Sensor is shown as below
3.5.6.3 Technical Parameters
A/F ratio rich threshold: ＞
750 mVDC
A/F ratio lean threshold: ＜
120 mVDC
Heater power: 7.0W
(These parameters as above are measured basing on 450°C (engine dyno), typically on
70% duty at 10Hz and under 13.5V)