Diesel Particulate Filters
Diesel Particulate Filter (DPF) is a device designed to remove diesel particulate matter (DPM) or soot, from the exhaust of diesel engines.
Why need DPF Regeneration?
Because Diesel Particulate filters can be a very expensive part to replace, Longlife are able to offer a much more cost effective and permanent solution for you. DPF Servive solution is not only usually less expensive than having a DPF replacement, it also means that you never need worry about having to have the job done again in the future.
Passive regeneration
Passive regeneration takes place automatically on motorway-type runs when the exhaust temperature is high. Because many cars don't get this sort of use car manufacturers have to design-in 'active' regeneration where the engine management computer (ECU) takes control of the process.
Active regeneration
When the soot loading in the filter reaches a set limit (about 45%) the ECU can make small adjustments to the fuel injection timing to increase the exhaust temperature and initiate regeneration. If the journey is a bit stop/start the regeneration may not complete and the warning light will come on to show that the filter is partially blocked.
It should be possible to start a complete regeneration and clear the warning light by driving for 15 minutes or more.
If you ignore the warning light and keep driving in a relatively slow, stop/start pattern soot loading will continue to build up until around 75% when you can expect to see other dashboard warning lights come on too. At this point driving at speed alone will not be enough and you will have to take the car to a dealer for regeneration.
DPF additives
The most commonly fitted type of DPF has an integrated oxidising catalytic converter and is located very close to the engine where exhaust gases will still be hot. This heat means that passive regeneration is possible.
There's not always space close to the engine though so some manufacturers use a different type of DPF which uses a fuel additive to lower the ignition temperature of the soot particles so that the DPF can be located further from the engine.
What is ECU?
In automotive electronics, electronic control unit (short for ECU) is a generic term for any embedded system that controls one or more of the electrical system or subsystems in a motor vehicle.
Types of ECU
Engine control module, Airbag control module, Body control module, Transmission control module, Brake control module and so on.
What are ECU Parameters?
ECU parameters are the key information in the ECU system.
Protocol :
ECU communicates with others by different protocol. The protocol include CANBUS, KWP, ISO, PWM,VPW and so on.
Channel:
ECU communication channel. For example, the KWP engine system normal channel is #7. The CANBUS system normal channel is #6.
Baud rate:
ECU communication baud rate. For example, the KWP system normal baud rate is 10416bps. The CANBUS system is 500Kbps.
ECU ID:
Canbus ECU System respond ID. For example, the standard canbus engine system ID is 0x07E0.
TOOL ID:
Canbus System request ID. For example, the standard canbus engine system ID is 0x07E8.
Target Address:
The ECU system target address. For example, the engine system is 0x10.
Source Address:
The ECU system source address. For example, The Engine System is 0xF1.
Address Code:
The KWP or ISO ECU system address. For example, The KWP Engine System address Code is 0x33 and so on.
What does VDSA do?
VDSA show the ECU parameter. Such as ECU Protocol, Channel, Baud rate, ECU ID, TOOL ID and so on. It’s work without Communicating the ECU.
VDSA Reads the ECU parameter. Such as ECU Protocol, Channel, Baud rate, ECU ID, TOOL ID and so on. It’s work with Communicating the ECU.
The ECU parameter helps you know the real information of the ECU System.
Why you need the VDSA?
1. The diagnostic scanner company
Do you consider sending engineer to grab data for a large budget?
Do you consider how to get more help from the dealer or end users, even you have data login?
VDSA shows you the key information what you can just read and use it directly to develop ECU system.
VDSA show them how to learn and get the right information.
2. The diagnostic engineer or fresh engineer
Do you consider how to improve your skill quickly?
VDSA helps you to learn and be proficient in every vehicle soon.
3. The auto diagnostic scanner dealer or end user
Do you consider how to help your related scanner company to improve the product?
VDSA shows you how to learn and get the key information. Just Read and Print, Then Send. So easy!
4. The vehicle owner
Do you want to know more about your lovely car?
VDSA shows you a easy way to learn even if you have no ideal about the ECU system.
5. The people who want to learn or DIY car
Do you want to learn how to write diagnostic software for car or do something special?
VDSA gives you a platform. you can get the key information what you need via the VCI and software interface.
6. The vehicle related university
Do you consider finding a right system or tool to teach the student?
VDSA supports thousands of vehicle diagnostic information. It must be a good start.
7. The people or company who want to make a scanner base on android or apple operation system
Do you consider finding out different kinds of real cars to collect data?
VDSA shows the enough key information without the thousands of real cars. and it can also read the key information.
What is OBDII Connector in the car?
Position: The socket normally under the dashboard or hand brake.
Common Channel Summary
#1 - Single Canbus
#2 - J1850 Bus+
#4 - Chassis Ground-
#5 - Signal Ground-
#6 - Canbus High +
#7 - ISO9141-2 K Line
#10 - J1850 Bus-
#14 - Canbus Low-
#15 - ISO9141-2 L Line
#16 - Power +
