Regenerator for diesel particulate filter
US4589254A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jul 12, 1984 |
| Grant date | May 20, 1986 |
| Priority date | — |
| Expiry date | Jul 12, 2004 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B3/06
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An apparatus for controlling the supply of air to a burner used to recombust diesel particulates trapped in a ceramic filter. The inventive control apparatus includes an exhaust bypass line that bypasses the filter, an air supply line leading to a burner associated with the filter, a flow control valve that adjusts the cross-sectional area for the air flow in the air supply line, a relief valve that maintains a constant difference between pressures at points upstream and downstream of the flow control valve, and a control unit that controls the degree of opening of the flow control valve. With the invention, precise control over the flow rate of secondary air is ensured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.