With the increasing popularity of non-road National IV equipment, more and more non-road National IV users are paying attention to emission treatment systems.
Did you notice? The seamless regeneration of Cummins 's non-road National IV emission treatment system has inadvertently helped you achieve more efficient operation.
Particulate matter trap DPF：
It is a ceramic filter installed in the emission system of diesel engines.
What is sensory free regeneration still needs to be explained from the commonly referred DPF.
In the microcosm of emission treatment systems, each core component has its own responsibilities. Some are responsible for managing hydrocarbons, some are responsible for reducing nitrogen oxides, and DPF is responsible for capturing particulate matter in exhaust gases. With it, the black smoke generated by the engine cannot be fooled.
DPF is like a filter element in the emission treatment system, and the more particles it captures, the more it affects the exhaust and engine power.
At this point, DPF needs to use high temperature to convert particulate matter into carbon dioxide during engine operation, which is commonly referred to as regeneration.
DPF regeneration is crucial for the normal operation of equipment. Once DPF regeneration encounters a malfunction, it may lead to an increase in equipment fuel consumption, pollutant emissions, and even engine torque limitation, seriously affecting work efficiency. After regeneration, it can ensure continuous smoothness inside the DPF and continuous online engine performance.
The Cummins emission treatment system can use modules such as differential pressure sensors to promptly determine the vehicle's regeneration status
Cooperate with intelligent active diagnosis system to provide early warning and prevent faults from occurring.
Non sensory regeneration, no need for manual intervention, including the following regeneration modes:
Passive regeneration 01
Oxidation of carbon smoke occurs automatically under normal driving conditions through NO ₂ in the exhaust gas. As long as the exhaust temperature conditions are met, passive regeneration can continue indefinitely.
Active regeneration 02
This is achieved through active multi injection of fuel by the engine. When diesel vehicles are operating at low temperatures, the exhaust temperature is low, and passive regeneration is limited to some extent. Active regeneration can use external energy to increase the temperature inside the trap, causing particulate combustion.
In situ regeneration 03
Only occurs when the device is stationary. The driver parks and presses the in-situ regeneration switch to activate in-situ regeneration. It is used when the carbon accumulation exceeds a certain limit and triggers the DPF indicator light to light up.
The Cummins emission treatment system not only achieves a filtration efficiency of over 99% for particulate matter mass concentration (PM) and particulate matter quantity concentration (PN), but also has an ultra-long regeneration interval. It also achieves seamless regeneration, and excellent thermal management technology makes regeneration more fuel-efficient.