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OE Part Number | Applications | DT Part Number |
12368487431 | BMW 225XE (F45) , X1 (F49), M5 Sedan (F60) | PFV10000-12B1 |
What is the difference between an inverter and DC/DC converter in an electric vehicle?
Much like how internal combustion engines and alternators work together on conventional vehicles, hybrid cars and electric motors use inverters and converters to manage power to and from the battery pack to the motors and other on-board systems.
Inverters transform direct current (DC) from the battery into alternating current (AC) to power the vehicle. Inverters also control the motor and convert it to a generator, transferring braking energy back into the battery.
Converters control the DC voltage from the battery, either stepping it up or down based on the system and the power needed. DC/DC converters usually step down the high voltage from the battery pack to the 12-volts used by radios, headlights, and more.
An OE solution for aftermarket power electronics
Inverters and converters work together to manage the vehicle's electric drive and accessory systems. However, many of today’s inverters and converters can be complex, expensive, and prone to failure from excessive heat. They are also heavy and take up a lot of room on the vehicle, compromising both trunk and passenger compartment space. Delphi OE solution combines the inverter and DC/DC converter into one unit.
Delphi CIDD is cost-effective and saves vital weight and space in hybrids (HEV), plug-in hybrid electric (PHEV), and electric vehicles (EV). And by leveraging patented OE technology - Viper-enabled inverter’s double-sided cooling - it tackles the issue of overheating, allowing higher power outputs from a smaller package and increased range.
Combined Inverter and DC/DC Converter (CIDD)
- Enhances durability and reliability through features designed to withstand under the hood and environmental factors such as debris and temperature extremes.
- Improves voltage distribution functionality, enabling both low-side and high-side power for everything from headlights to power steering and air conditioning systems.
- Provides maximum packaging flexibility and space savings by moving the DC/DC unit from its standard location in the rear to the front of the vehicle.
- Enables better power range and minimizing power losses through the elimination of cabling, cooling hoses, connections, and housings, all while simplifying maintenance and repair.
To learn more about OE quality aftermarket EV parts you can trust, contact your Delphi representative today.
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OE heritage and knowledge built into every aftermarket part
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Related product resources and downloads
Resource Highlights
NOx Sensors: An introduction
The Oxides of Nitrogen sensor is also known as a NOx sensor. It’s installed within a vehicle’s engine to test for the amount of oxides of nitrogen being emitted. The sensor then sends this information into the SCR system, which reduces the amount of NOx emissions.
A NOx sensor that isn’t working properly can be the cause of many problems within a vehicle’s performance such as rough idling or jerky acceleration.
What causes a NOx sensor to fail?
There are a few common causes of NOx sensor failure, which occurs when the sensor is no longer performing its role accurately – or at all. The most common NOx sensor failure reasons are soot build-up and heat damage.
It helps to determine which component has failed; the probe which detects the chemical makeup of the exhaust, or the sensor module which relays that information to the SCR system.
How to test a NOx sensor
Testing the NOx sensor will allow you to identify the reason it has stopped functioning properly. You’ll also get a good idea through a NOx sensor test what the best course of action would be.
Use a scanning tool to diagnose faults
A diagnostic tool like Delphi's BlueTech VCI can help you find out what faults have been reported by the onboard computer, if any. Plug in the tool and select the relevant ECU to pull up a list of reported NOx sensor fault codes.
Examples of common NOx sensor fault codes
OBD error codes ranging from P2200 to P2225 are the codes commonly associated with a NOx sensor fault. A NOx sensor error in Bank 1 is usually P2202. In Bank 2, it might be a P2213.
How to test a NOx sensor with a multimeter
Check the wiring diagram for the sensor to see which wires connect to the CAN, and which are for the power supply. Once you know which wires perform which task, use the multimeter to ensure there are no issues with the power supply.
In addition, test whether the CAN wires are in good enough shape to send data by testing them with an oscilloscope.
If the NOx sensor module passes these tests, it’s likely the issue lies with the sensor itself.
The NOx sensor is faulty – what should I do?
If testing the NOx sensor reveals a fault, you may need to replace the sensor and module. See our guide to replacing a NOx sensor to find out more about the process.
The NOx sensor isn’t faulty – what should I do?
If testing the NOx sensor concludes that there are no issues with the sensor itself, or the NOx sensor module, but the vehicle is still exhibiting problems or returning error codes, the problem is likely to lie elsewhere within the vehicle.
Another of the vehicle’s onboard sensors could be causing issues, such as the oxygen sensor or the air flow sensor . Faulty sensors relaying false information to the ECU – or no information at all – can cause erratic performance and damage the engine. Test the other sensors to check for issues.
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