Diesel Particle Filter with stand-still or idling combustion chamber.

You can turn the combustion chamber with your mouse.

 

Operation Principle and Technology

Image 1: „Wall flow“ Principle

The structure of the filter core is based on a silicon carbide honeycomb and operates according to the so-called „Wall flow Principle“ (Image1). The exhausts flow through the inlet ducts which are closed on the outlet parts. The deposition of the soot particles takes part on the thus forced flow on behalf of the porous channel walls.

 

Image 2: SiC-Filter structure

Combustion of the accumulated particles takes place by means of the innovative PHYSITRON-combustion chamber as stand-still or idling regeneration thereof (Image 3).

As far as the PHYSITRON SiC-CB diesel particle filter (with catalytic coating) is concerned, the oxidation of the soot is guaranteed as well by a passive as well as by an active regeneration (combined regeneration). The catalytic passive regeneration takes place at approximately 250°C onwards. If the exhaust temperatures range below 250°C active regeneration (diesel combustion chamber) will be used.

 

Image 3: Schematic display – Diesel particle filter SiC-CB with combustion chamber supported regeneration

 

The regeneration intervals depend on the engine-out emissions of the engine, the size of the filter and the engine’s load (exhaust temperature) and, during one shift operations, they take place approximately once per week with the motor shut down (engine stand-still). Depending on the application the regeneration duration ranges between approximately 30 to 60 minutes. For combustion of the root the diesel fuel from the main tank of the vehicle is being used.

 

Advantages

  • Fully independent from the exhaust temperature
  • Combination of active and passive filter regeneration
  • Automatically controllable combustion performance between 3 and 25 kW
  • No connection to the public electricity network necessary, thus the regeneration is independent from the location or site
  • Fast, safe and gentle regeneration of the filter due to adaptable combustion chamber performance
  • Safe cold start even at low temperatures
  • Very high mechanical and thermal characteristics

 

Usage

  • As stand-still and idling combustion chamber
  • With respect to mobile machines and devices which neither have to pay attention to exhaust temperatures nor conditions of usage such as e.g.: fork-lifts, wheel bearings, telescopic handlers, rollers, generators, auto cranes, municipal vehicles
  • Appropriate for retrofitting of NRMM machines (Non-road mobile machinery).

 

Specials

  • VERT certified and accredited
  • Verified and examined by the Swiss Bundesamt für Umwelt (Federal Department for Environment) BAFU as well as by the Suva as far as retrofitting of diesel engines are recommended
  • Requirements according to TRGS554 fulfilled for Germany
  • Positive functional testing by means of HTW-Dresden
  • Positive evaluation by means of TÜH with respect to meeting the requirements according to  §19 Section 2 StVZO and § 30 Section 1 Item 1 StVZO
  • No loss of operating authorization upon subsequent retrofitting of the combustion chamber
  • Decrease of particle emissions ≥ 99%
  • Reduction of puffs of smoke ≥ 98%
  • Reduction of carbon monoxide (CO) ≥ 94%
  • Reduction of hydrocarbons (HC) ≥ 82 %
  • Reduction of nitrogen oxide (NOx) up to 20%
  • Reduction of carcinogenic PAH ≥ 70%
  • Reduction of dioxin and furan ≥ 50%
  • Reduction Nitro-PAH ≥ 40%