Peugeot 607 Diesel Particulate Filter DPF

The Diesel Particulate Filter (DPF) on the Peugeot 607 HDi diesel engines is an anti-pollution device installed after the catalytic converter and before the silencer. It captures up to 99% of fine particles (soot and ashes) produced by diesel combustion, significantly reducing harmful emissions.

The DPF operates by filtering exhaust gases through a ceramic honeycomb structure which traps solid particles. It then regenerates to burn off accumulated soot either passively at high exhaust temperatures or actively via engine management interventions such as post-injection and turbo control, raising the exhaust temperature to around 450°C for soot combustion and ash reduction.

The Peugeot 607 DPF includes:

• A ceramic filter body with microscopic channels forming a honeycomb structure
• Differential pressure sensors measuring pressure before and after the DPF to detect clogging
• An EOLYS additive tank for cerine injection that lowers soot combustion temperature

Its mounting type changed depending on the year, for example hexagonal fixing until 2004, then 4-bolt fixation from 2004.

Signs of DPF clogging include:

• Dashboard warning light "Service" and messages about filter clogging risk
• Power loss, increased black smoke emissions, and higher fuel consumption
• Detected high backpressure by sensors

Note: Some later models may also feature AdBlue/SCR systems for NOx reduction.

DPF regeneration occurs in three ways:

• Passive regeneration happens automatically at sustained high exhaust temperatures (usually on motorway driving, >550°C)
• Active regeneration is triggered by the engine computer every 500-1000 km if clogging is detected, via EGR valve cut-off, post-injection of fuel, and turbo control
• Manual regeneration can be forced via diagnostic tools for maintenance optimization

The EOLYS additive reduces the regeneration temperature to about 450°C, improving frequency and efficiency especially in urban driving conditions.

To maintain your DPF and preserve its efficiency:

• Prefer motorway or longer drives to allow passive regeneration
• Avoid frequent short trips under 10 km that prevent full regeneration
• Regularly check and refill the EOLYS additive reservoir
• Use diagnostic tools for forced regeneration if you mostly drive in urban conditions

Due to irreversible ash buildup, DPF replacement may be required every 100,000 to 200,000 km depending on usage.

Replacement requires:

• Accessing the exhaust system and removing the old DPF, considering the specific fixation type per year model
• Installation of a new high-quality DPF compliant with manufacturer and European standards

Illegal removal of the DPF is not advised due to pollution impact and failing vehicle inspections.

For in-depth technical details, please consult reputable automotive sites and forums dedicated to Peugeot 607 and DPF technology, for example:

• Technical explanations about DPF and additives technology on catalyseur-auto.com
• Operation diagrams and guide on fiches-auto.fr
• Peugeot 607 specific guides on meca-express.fr and revue-technique-auto.fr
• User experiences on forum-auto.matmut.fr and maintenance advice on metal5.com

Searching with terms like "Peugeot 607 HDi DPF regeneration diagbox" or "Peugeot 607 DPF replacement cost" will provide additional updated information.

Always ensure any replacement parts are original-quality DPFs complying with PSA and European motor vehicle emission standards for best engine performance and environmental compliance.