What temperature is regen?

Passive Regeneration. Thermal regeneration of diesel particulate filters requires temperatures of around 600°C (Figure 1). Such exhaust temperatures are rarely encountered in practical applications of the diesel engine. Most heavy-duty diesel engines produce exhaust temperatures in the range of 300-450°C.

What temp should engine be for regen?

The primary one is coolant temperature. You want to make sure that the coolant temperature has reached at least 160 degrees Fahrenheit.

What temperature does a DPF regen at?

The DPF should be regenerated after certain driving hours or distance to eliminate soot in the filter. The most widely used method is active regeneration with oxygen at 550~650°C.

What temperatures are forced regens?

FORCED Regeneration

Passive regeneration happens frequently in long-haul trucking because it requires continuous driving where the DPF can hit a temperature above 1,000 degrees Fahrenheit to create the heat levels that turn soot into ash.

What temperature is aftertreatment regeneration?

During testing, temperature of exhaust gas can become 1500°F (800 °C) and the temperature of exhaust system surface can cross 1300°F (700°C).

DPF problems: How diesel particle filters actually regenerate | Auto Expert John Cadogan

How do I know when Regen is complete?

Monitor the Exhaust temperature and RPM. When the idle comes back down it means that the regen has finished. If the regen starts and stops then you may have a problem that prevents the regen from taking place.

What happens if regen takes too long?

If your forced DPF regen lasts closer to an hour or continues beyond that, it likely suggests that your exhaust temperatures are not building up high enough to successfully burn off the soot collected in the DPF and that the truck is still trying to bring down those soot levels.

What triggers a regen?

And one issue many fleet drivers don't plan for is forced regens. If you haven't experienced this issue yet, consider yourself lucky. A forced regen occurs when soot builds up inside the diesel particulate filter (DPF) to the point that the vehicle is no longer operable.

What speed should a regen be?

To make sure that the regeneration takes place, most manufacturers suggest that every few hundred miles, the car is driven for a period of more than 15 minutes at a consistent speed of more than 40mph. Doing this should kick-start regeneration and clear the filter.

How long does it take to idle regen?

That burn-off, which is also called a regen, typically takes around 20 to 30 minutes when done regularly but can take up to 40 minutes if the vehicle has experienced a lot of idling.

At what RPM does DPF regenerate?

You should consult the handbook for your vehicle for more specific guidance on how you should drive to initiate regeneration of the DPF and clear the warning light. Nevertheless, a general rule of thumb to follow is that you should run the engine at least 40 mph and at least 2500 rpm.

Can I drive my truck during regen?

The vehicle needs to run at operating temperature during the regeneration, so highway driving is best. Just drive as you normally would. During active regeneration, the exhaust outlet temperature is extremely high.

Why is my DPF not getting hot enough for regen?

A prematurely clogged DPF normally means the filter isn't getting hot enough to burn the soot off during regular regens. It's important to deal with this quickly, or the pressure buildup can crack the DPF. Common indicators of a clogged DPF filter are unusually frequent forced regens and unusually long ones.

When should I manually regen?

Manual -- This type of regeneration occurs only when the vehicle is stationary, and it requires action on the part of the vehicle operator. The check engine light will illuminate on the vehicle dashboard, usually after an extended period of idling (when hydrocarbons build up and can cause overheating of the DPF).

Can you drive during a regen?

An automatic regen does not require any action by the driver, other than making sure the truck stays ON. It is safe to continue driving as normal. A regeneration cycle typically takes between 10 and 30 minutes to complete.

Does regen use more fuel?

Active DPF regenerations need to burn extra fuel to achieve the high exhaust temperature for soot oxidation, which results in the increased fuel consumption rates.

Can a forced regen damage engine?

Force regeneration of the particulate filter

The ash from the engine oil accumulates on the inner walls of the ceramic and in the pores. This increases the pressures in the DPF and if clogged, can even damage the engine.

Why does my truck need to regen so often?

Regen problems generally arise where city driving, excessive idling or light duty cycles are encountered. Or, if other engine components such as EGR valves, turbochargers, injectors are fouled or not working properly. DPF regeneration cycles then become more frequent, and more prolonged!

How long should a parked regen take?

Warm up the engine. It should be running for at least 3 or 4 minutes before starting regen. Press and hold the regeneration button for a few seconds, until the regen warning light goes off and the regen process light starts to blink. Wait for the process to finish, about 30 to 40 minutes.

How often does a diesel need to regen?

Active regeneration takes around 5 to 10 minutes to complete, and normally happens every 300 miles or so depending on how you drive and how often you use your car.

How much does a forced regen cost?

A forced regeneration can be performed by any service shop with the appropriate diagnostic software. The cost for a forced regeneration varies. Generally, it is between $300-$700 depending on the technician's required diagnostic time and the length of time your DPF regeneration lasts.

How much fuel do you need for a regen?

Driving with a low fuel tank. Regeneration will not take place with less than a 1⁄4 of a tank of fuel.

How do you increase regen?