Fiat Scudo Diesel Particulate Filter DPF

The Diesel Particulate Filter (DPF) on your Fiat Scudo diesel engine is a key component of the exhaust system designed to capture and remove fine soot particles emitted by the engine. It works by filtering the exhaust gases and trapping these harmful particulates, helping reduce pollution and comply with emission standards.

There are two main DPF system configurations for the Fiat Scudo :

• DPF system with additive : This requires a fuel additive to assist in periodic regeneration by lowering the combustion temperature of accumulated particles.
• DPF system without additive : Regeneration occurs without the need for additives, usually by increasing exhaust temperature through engine management.

DPF regeneration is an automatic cleaning cycle to burn off trapped soot particles and maintain filter efficiency. It works as follows :

• Differential pressure sensors monitor soot accumulation by measuring pressure changes before and after the filter.
• When pressure difference reaches a set threshold, engine management initiates regeneration by raising exhaust temperature above 550°C.
• Soot particles burn and convert to carbon dioxide, passing freely through the filter.
• This regeneration typically occurs every 400 to 600 km under normal driving conditions.

For systems with fuel additive, regeneration can happen at lower temperatures (around 100°C) making the process quicker and more efficient.

The DPF warning light or anti-pollution system failure light may come on due to several issues :

• Excessive soot buildup causing DPF clogging and obstructing exhaust flow.
• Failure of the catalytic converter which impairs the regeneration process.
• Diesel pump or primer pump problems causing fuel delivery issues.
• Loss of engine power often accompanies the warning light activation.

On the Fiat Scudo, the DPF and the catalytic converter are combined in a single welded cylinder and cannot be opened separately.

• Both parts must always be replaced together to ensure proper regeneration and filter performance.
• If the catalytic converter fails, regeneration will not occur, causing the filter to clog and potentially damaging the engine.
• The service life of the catalytic converter corresponds closely with that of the DPF, reinforcing the need for joint replacement.

Worn or clogged DPFs cause several operational issues :

• Accumulated soot obstructs exhaust gas flow, increasing backpressure in the engine.
• This reduces engine power and responsiveness, negatively affecting vehicle performance.
• The engine consumes more fuel compared to when fitted with a new or clean DPF system.
• Overall durability of the exhaust and emission control system is shortened.

Yes, diesel particulate filters are available specifically for Fiat Scudo models, such as the Fiat Scudo 2.0 D (27) equipped with the RHH DW10CTED4 engine:

• Engine power: 163 hp / 120 kW.
• Production from 2010 onwards.
• DPFs designed to fit this specific engine and vehicle model are available to ensure correct function and regulation compliance.

Useful resources include :

• Illustrated manuals and video tutorials for DPF replacement on Fiat Scudo.
• Online automotive forums where Scudo owners discuss DPF issues and solutions.
• Specialized garages offering expert DPF cleaning and diagnostics services.
• Technical websites and part catalogs providing specifications for Fiat Scudo DPF models.
• Educational videos explaining DPF technology and function in detail.

For genuine, high-quality new DPFs and catalytic converters for Fiat Scudo, consider products certified to European regulations and bearing manufacturer specifications to ensure optimum performance and durability.