Guide to the BG DPF Intake and Emissions System Service
March 2, 2015
A brand new solution for DPF cleaning was unveiled at the recent OESAA/AutoInform conference at Wolverhampton. BG Products launched the first in-situ cleaning system that cleans from the air induction system through to the DPF.
Cleaning the DPF in isolation is a bit like changing a nappy, it will only refill again unless something is changed! The source of the deposit in a DPF is inefficient combustion leading to higher production of soot. This in turn leads to a higher workload for the DPF.
To achieve the high temperatures necessary for the DPF to clean itself (regenerate), the diesel vehicle must exceed 40 mph for an extended period. This presents a problem for vehicles driven in urban traffic—where the vehicle experiences excessive idling and stop/start driving—therefore never regenerating the DPF, which eventually overloads, often to the point when it not recoverable.
David Tenpenny, from BG Products Research & Development team says, “People in the diesel industry realise this is a real problem that’s not going away and if you want to solve it, you have to fix what’s causing it. If not, you’re just applying a sticking plaster.” Which, Tenpenny adds, has been the case for every other ‘solution’ so far.
The BG Technology Department saw this problem as an opportunity, and after years of research and development, developed the complete solution. The BG Diesel Intake and Emissions System Service uses innovative technology to restore the DPF, while simultaneously performing an effective intake system cleaning.
The system commands and controls regeneration, which is key to cleaning the emissions system. Installed through the air intake system advanced chemistry effectively disperses hydrocarbons from the intake all the way through to the DPF to be burned off and sent out the tailpipe.
According to David, careful temperature monitoring, adjusting RPM and patience are the key to a successful service. “It’s also essential to follow this clean-up with an advanced oil flush to restore the integrity of the piston rings, an essential component of compression - this in turn will help limit future soot production
The process, which controls air intake flow and EGT (Exhaust Gas Temperature) to very precise levels, will use chemistry and heat to clean the intake, the injectors and the DPF (a consequent clean of the piston rings will restore compression for optimum fuel economy and reduction of soot production), is as follows:
- Hook up diagnostic scanner to monitor EGT (Exhaust Gas Temperature) and get DPF readings
- Attach the correct adaptor to the air intake of the engine
- Ensure chemistry in the machine is at the correct temperature for atomisation
- When EGT is at the correct temperature the chemistry is allowed to flow into the intake system
- The EGT is constantly monitored and controlled through the circa 40 minute process
Frank Massey tested the system and has produced a video of it on Youtube. Frank used a Picoscope to get a pre treatment reading. The red line shows the back pressure (measured as resistance) in the MAF sensor and the blue lines show the backpressure in the DPF. The second reading (after the treatment) shows a reduction in the resistance in the DPF equivalent to 90%. His results, using a Picoscope, are below.
To request a call from one of the BG Team, Experts in the field of removing deposits, increasing MPG and extending engine life, ask us to give you a call back or call us on 01284 777934.
Last updated: August 27, 2015 @ 17:51 PM