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DONGFENG TIANLONG ECM/ECU(Engine Control Module)4995445
FUNCTION
1. Fuel Injection Control: Based on signals such as engine speed, load, coolant temperature, and intake pressure, it calculates the precise fuel injection quantity for each stroke. It precisely controls the opening and closing timing of the fuel injectors to ensure that fuel combustion occurs at the optimal moment, thereby optimizing power output and reducing noise.
2. Emissions and Aftertreatment Management: It calculates and instructs the urea pump to inject the appropriate amount of urea to catalytically convert nitrogen oxides in the exhaust gas. It also controls the opening of the exhaust gas recirculation (EGR) valve to lower combustion temperatures.
3. Engine Self-Protection and Diagnostics: It monitors parameters such as oil pressure, coolant temperature, intake air temperature, and fuel pressure. If any values deviate from the norm, the ECM triggers an alarm. When a critical fault is detected (e.g., critically low oil pressure or excessively high coolant temperature), the ECM forcibly limits the engine's speed and power output to prevent cylinder scoring or catastrophic engine failure.
4. Vehicle Communication and Logic Control: It facilitates information sharing via a data link with other vehicle modules, including the Transmission Control Unit (TCU), instrument cluster, ABS system, and body controller.
DETAILS
| DESCRIPTION | ECM/ECU(Engine Control Module) | PART NUMBER | 4995445 |
| WEIGHT | 3.0 kg | VOLUME |
260 mm * 210 mm * 45 mm |
| TRUCK MOLDE | DONGFENG | QUALITY | Copy,High Copy, OEM,Original |
| MOQ | 1 | WARRANTY | 1 year |
| PAYMENT | TT/WESTEN UNION | SHIPMENT | by air/sea/railway |
| BRAND | SINOSACHS | PLACE OF ORIGIN | JINAN CITY,CHINA |
| STOCK | IN STOCK | APPLICABLE SITE | ENGINE |
| PACKAGE | Carton/Woodenbox | PORT OF LANDING | Qingdao Port,China |
Typical Failure Symptoms
1. Failure to Start: The instrument cluster does not display the glow plug indicator light, and a diagnostic computer cannot establish a connection.
2. Intermittent Stalling: Internal circuit cold solder joints or thermal failure causes an automatic power cutoff once the unit heats up.
3. Current Anomalies: Diagnostic trouble codes report "Sensor Supply Voltage 1 or 2: Too Low/Too High."
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