Combined Inverter and DC/DC Converter

Delphi Combined Inverter and DC/DC Converter (CIDD) is our OE solution for hybrids (HEV), plug-in hybrid electric (PHEV), and battery electric vehicles (BEV) that delivers maximum power density in a lighter, smaller, cost-effective package.

As the market for electric cars rapidly increases, independent aftermarket garages will need the right replacement part for the repair. That’s why Delphi is offering exact OE performance with our power electronic aftermarket parts.

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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.

The Delphi Difference

100 years of OE experience, supplier to the world’s top automakers
OE heritage and knowledge built into every aftermarket part
Comprehensive portfolio for a wide range of vehicles and model years
Streamlined SKUs for easy inventory management
Support through tools, tips and training

Related product resources and downloads

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Our How To for checking the EGR on K9K engines

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Diagnostics Emissions Diagnostics & Test Equipment EGR valves Emissions Vehicle Electronics & Engine Management Technical specification Distributors DIYers Shop Owners Technicians 2 min read

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In this article you will find a step by step guide on how to check the EGR on K9K engines.

Make	Model	System
Renault	1.5 K9K (08-10)	Diesel systems

Microdiesel

EGR valve status

This function allows the EGR status to be read and the operation of the valve to be checked. The EGR valve status is indicated in a list with a status number.

IFR-50

Test preconditions

Key on or engine running.
Coolant temperature > 80 °C.

Procedure

Start DCU communication, select "Settings" and then "EGR valve status."

Background Check

List the parameters :

Use this list to compare with the indicated value.

STATUS : None

No EGR shutoff, the EGR operates normally according to the DCU programming.

STATUS : 1, 5, 6, 7, 9, 10, 12, 13, 15, 19, 23, 24

Switch off the ignition and wait for 1 minute. Switch the ignition on and check for faults. Check the battery voltage, engine stopped and engine running. If there is no fault code flagged or memorised, restart the vehicle and check the idle speed. Do not rev the engine to not run it too fast.

STATUS : 3, 14, 16

Accelerate to above idle for a few seconds.

STATUS : 2

Check that the clutch pedal is fully up and that the vehicle is stationary.

STATUS : 4, 17

Check for any fault codes present and recorded and correct them.

STATUS : 8

Reset the EGR offsets by using the command “Programming reset" and select "EGR

valve".

STATUS : 11, 22

Allow the engine temperature to rise until the out of service setting disappears.

STATUS : 18

Check that the DPF regeneration running has been fully completed.

STATUS : 20

Allow the engine temperature to fall until the out of service setting disappears.

STATUS : 21

Atmospheric pressure too low, the EGR valve is deactivated

To help isolate the cause of an EGR-related problem with the valve, passages, or control system, follow the recommended procedures below:

If normal results were obtained, the EGR-related problem is being caused by a malfunctioning control system (vacuum-operated valves only). For electro-mechanical valves, a normal result indicates that the EGR-related concern is intermittent, check for stored fault codes with diagnostic equipment.

If there is no change in idle quality, then either the EGR valve is inoperative or the EGR passages are completely restricted. A slight change in idle quality is indicative of partially clogged passages.

AVM2-PC

Replacing the EGR valve

Remove the carbon residues from around the valve housing before installing a new one.
Scrupulously clean the valve mounting surface and position the new valve and its gasket.
Tighten the fixings according to the fitting recommendations.
Connect the vacuum hose and the electrical wiring.