Kia Niro: Intake And Exhaust System / Exhaust Heat Recovery System(EHRS) Description and operation
| Description and Operation |
During cold start or in winter, the fuel efficiency can be improved by heating up the coolant with the exhaust gas heat discharged after combusting the engine. When the engine has been sufficiently warmed up, the valve on the passage of exhaust gas is opened to block the heat exchange of exhaust gas and coolant, thus to prevent overheating of coolant. The valve of the exhaust gas passage is opened and closed by the operation of wax actuator according to the temperature of coolant. To monitor the temperature of coolant, a separate water temperature sensor (WTS) is installed, and in the event of overheated coolant [over 120°C (248°F], the engine overheating warning lamp in the cluster is illuminated.
[Coolant Flow Chart]
Exhaust Manifold Repair procedures
Removal and Installation
1.
Remove the engine room under cover.
(Refer to Engine and Transaxle Assembly - "Engine Room Under Cover")
2.
...
Exhaust Heat Recovery System(EHRS) Troubleshooting
Troubleshooting
Symptom
Inspection
Remedy
Overheating
• Engine overheating
• Temperature gauge rising to HI
...
Other information:
Kia Niro 2017 (DE HEV) Service Manual: General safety information and caution
Safety Precaution
Precautions to take before servicing
high voltage system
Since hybrid vehicles contain a high voltage battery, if the
high voltage system o ...
Kia Niro (DE HEV) Owners Manual: Driving on grades
Reduce speed and shift to a lower gear before you start down a long or steep
downgrade. If you don’t shift down, you might have to use your brakes so much that
they would get hot and no longer operate efficiently.
On a long uphill grade, shift down and reduce your speed to around 70 km/h (45 ...
