# US 8,769,938 B2 · Exhaust treatment device with electric regeneration system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,769,938 B2 - Document ID: US8769938B2 - Status: Granted - Kind: B2 - Application number: 13/401,417 - Filed: 2012-02-21 - Published: 2012-11-22 - Granted: 2014-07-08 - Earliest claimed: 2006-06-19 - Assignees: Donaldson Company, Inc. - Applicants: Wayne M. Wagner; John T. Herman; Mary J. Lorenzen; Wenzhong Zhang - Inventors: Wayne M. Wagner; John T. Herman; Mary J. Lorenzen; Wenzhong Zhang - Web page: https://patentgrep.com/patent/US8769938B2 ## CPC - F01N 3/027: using electric or magnetic heating means - F01N 3/0238: {for regenerating during engine standstill} - Y10T 137/8376: Combined - F01N: GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES (arrangements in connection with gas exhaust of propulsion units in vehicles B60K13/00; combustion-air intake silencers specially adapted for, or arranged on, internal-combustion engines F02M35/00; protecting against, or damping, noise in general G10K11/16) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract The present disclosure relates to a diesel exhaust treatment device including a catalytic converter positioned upstream from a diesel particulate filter. An electric heater is positioned between the catalytic converter and the diesel particulate filter. A shore station can be used to provide power and combustion air to the diesel exhaust treatment device during regeneration of the diesel particulate filter. ## Claims ### Claim 1 A shore station for use in regenerating diesel particulate filters of exhaust treatment devices by heating the exhaust treatment devices with heaters, the shore station comprising: a control unit having a power input; multiple power output cords extending outwardly from the control unit for allowing the control unit to be connected to multiple heaters at the same time; multiple combustion air lines extending outwardly from the control unit for providing combustion air to multiple exhaust treatment devices in regenerating diesel particulate filters of the exhaust treatment devices, wherein the control unit measures the pressure provided by the combustion air lines such that if the pressure falls below a predetermined level for a predetermined amount of time, the control unit aborts a regeneration event. ### Claim 2 (depends on 1) The shore station of claim 1, wherein the control unit is configured to alternate power between first and second power output cords of the multiple power output cords. ### Claim 3 (depends on 1) The shore station of claim 1, wherein power is not supplied to first and second power output cords of the multiple power output cords at the same time. ### Claim 4 (depends on 1) The shore station of claim 1, further comprising at least one temperature controller configured to receive temperature feedback from thermocouples of the exhaust treatment devices, wherein the temperature controller is configured to control the temperature of the heaters of the exhaust treatment devices. ### Claim 5 (depends on 1) The shore station of claim 1, wherein the control unit is configured to provide power to the heaters of the exhaust treatment devices without providing combustion air to the exhaust treatment devices during a warm up sequence of regeneration. ### Claim 6 (depends on 5) The shore station of claim 5, wherein the control unit is configured to provide air to the exhaust treatment devices without providing power to the heaters during a cool down sequence of regeneration. ### Claim 7 (depends on 6) The shore station of claim 6, wherein the control unit is configured to provide pulses of air at a rate of 1 second on and 6 seconds off during the cool down sequence. ### Claim 8 (depends on 5) The shore station of claim 5, wherein the control unit is configured to provide pulses of air to the exhaust treatment devices after the warm up sequence. ### Claim 9 (depends on 8) The shore station of claim 8, wherein air is pulsed at a rate of 1 second on and 15 seconds off after the warm up sequence. ### Claim 10 (depends on 8) The shore station of claim 8, wherein the control unit is configured to generate an air flow rate of at least 3 cubic feet per minute after the warm up sequence. ### Claim 11 A shore station for use in regenerating diesel particulate filters of exhaust treatment devices by heating the exhaust treatment devices with heaters, the shore station comprising: a control unit having a power input; multiple power output cords extending outwardly from the control unit for allowing the control unit to be connected to multiple heaters at the same time; multiple combustion air lines extending outwardly from the control unit for providing combustion air to multiple exhaust treatment devices in regenerating diesel particulate filters of the exhaust treatment devices; wherein the control unit is configured to provide power to the heaters of the exhaust treatment devices without providing combustion air to the exhaust treatment devices during a warm up sequence of regeneration and wherein the control unit is configured to provide pulses of air to the exhaust treatment devices after the warm up sequence. ### Claim 12 (depends on 11) The shore station of claim 11, wherein air is pulsed at a rate of 1 second on and 15 seconds off after the warm up sequence. ### Claim 13 (depends on 11) The shore station of claim 11, wherein the control unit is configured to generate an air flow rate of at least 3 cubic feet per minute after the warm up sequence. ### Claim 14 A shore station for use in regenerating diesel particulate filters of exhaust treatment devices by heating the exhaust treatment devices with heaters, the shore station comprising: a control unit having a power input; multiple power output cords extending outwardly from the control unit for allowing the control unit to be connected to multiple heaters at the same time; multiple combustion air lines extending outwardly from the control unit for providing combustion air to multiple exhaust treatment devices in regenerating diesel particulate filters of the exhaust treatment devices; wherein the control unit is configured to provide power to the heaters of the exhaust treatment devices without providing combustion air to the exhaust treatment devices during a warm up sequence of regeneration, wherein the control unit is configured to provide air to the exhaust treatment devices without providing power to the heaters during a cool down sequence of regeneration, and wherein the control unit is configured to provide pulses of air at a rate of 1 second on and 6 seconds off during the cool down sequence. ### Claim 15 (depends on 11) The shore station of claim 11, wherein the control unit is configured to alternate power between first and second power output cords of the multiple power output cords. ### Claim 16 (depends on 11) The shore station of claim 11, wherein power is not supplied to first and second power output cords of the multiple power output cords at the same time. ### Claim 17 (depends on 11) The shore station of claim 11, further comprising at least one temperature controller configured to receive temperature feedback from thermocouples of the exhaust treatment devices, wherein the temperature controller is configured to control the temperature of the heaters of the exhaust treatment devices. ### Claim 18 (depends on 11) The shore station of claim 11, wherein the control unit is configured to provide air to the exhaust treatment devices without providing power to the heaters during a cool down sequence of regeneration. ### Claim 19 (depends on 18) The shore station of claim 18, wherein the control unit is configured to provide pulses of air at a rate of 1 second on and 6 seconds off during the cool down sequence. ### Claim 20 A shore station for use in regenerating diesel particulate filters of exhaust treatment devices of at least two different vehicles by heating the exhaust treatment devices with heaters of the at least two different vehicles, the shore station comprising: a control unit having a power input; at least two power output cords extending outwardly from the control unit for allowing the control unit to be connected to the heaters of the at least two different vehicles at the same time and at least two combustion air lines in addition to the at least two power output cords extending outwardly from the control unit for allowing combustion air to be provided to the exhaust treatment devices of the at least two different vehicles for regenerating the diesel particulate filters of the at least two different vehicles at the same time; wherein the control unit is configured to coordinate regeneration of the diesel particulate filters of the exhaust treatment devices of the at least two different vehicles to allow at least a part of a regeneration event of a first vehicle of the at least two vehicles to overlap with at least a part of a regeneration event of a second vehicle of the at least two vehicles to reduce the overall time required to regenerate the diesel particulate filters of the exhaust treatment devices of the at least two different vehicles independently. ### Claim 21 (depends on 20) The shore station of claim 20, wherein the control unit is configured to control the temperatures of the heaters of the at least two different vehicles at the same time by modulating the power back and forth between the heaters of the at least two different vehicles without requiring power to be provided to the heaters of both of the at least two different vehicles at the same time. ### Claim 22 (depends on 20) The shore station of claim 20, further comprising at least one temperature controller configured to receive temperature feedback from thermocouples of the exhaust treatment devices, wherein the temperature controller is configured to control the temperature of the heaters of the exhaust treatment devices. ### Claim 23 (depends on 20) The shore station of claim 20, wherein the control unit is configured to provide power to the heaters of the exhaust treatment devices without providing combustion air to the exhaust treatment devices during a warm up sequence of regeneration. ### Claim 24 (depends on 23) The shore station of claim 23, wherein the control unit is configured to provide pulses of air to the exhaust treatment devices after the warm up sequence. ### Claim 25 (depends on 23) The shore station of claim 23, wherein the control unit is configured to provide air to the exhaust treatment devices without providing power to the heaters during a cool down sequence of regeneration.