Patents by Inventor Marie Stenfeldt
Marie Stenfeldt has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10337381Abstract: The invention relates to an exhaust gas aftertreatment device for an internal combustion engine, where the device comprises: an exhaust duct allowing a through-flow of exhaust gas; a catalytic NOx converter arranged in the exhaust duct; and a fluid inlet arranged to introduce a liquid reductant into or onto a structure in the exhaust duct upstream the catalytic NOx converter. The invention is characterized in that the structure is a sorption structure having pores configured to retain the liquid reductant in liquid form until it evaporates. The invention also relates to a vehicle provided with such a device.Type: GrantFiled: March 16, 2017Date of Patent: July 2, 2019Assignee: VOLVO CAR CORPORATIONInventors: Marie Stenfeldt, Peter Sandberg, Rakshith Ramachandra
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Patent number: 10190466Abstract: The disclosure relates to an exhaust gas aftertreatment device for purification of exhaust gas emissions. The exhaust gas aftertreatment device is arranged in an exhaust gas passage subsequently of an internal combustion engine and includes an encapsulating portion, a first catalytic substrate and a second catalytic substrate. The second catalytic substrate may be of SCR type. The exhaust gas aftertreatment device includes a reductant injecting device, a pipe and an obstructing portion, where the reductant injecting device is arranged such that reductant is injectable within the pipe and the exhaust gas flow through the pipe can be controlled by the obstructing portion.Type: GrantFiled: July 10, 2018Date of Patent: January 29, 2019Assignee: Volvo Car CorporationInventors: Mats Laurell, Jan Dahlgren, Peter Sandberg, Marie Stenfeldt
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Publication number: 20180320575Abstract: The disclosure relates to an exhaust gas aftertreatment device for purification of exhaust gas emissions. The exhaust gas aftertreatment device is arranged in an exhaust gas passage subsequently of an internal combustion engine and includes an encapsulating portion, a first catalytic substrate and a second catalytic substrate. The second catalytic substrate may be of SCR type. The exhaust gas aftertreatment device includes a reductant injecting device, a pipe and an obstructing portion, where the reductant injecting device is arranged such that reductant is injectable within the pipe and the exhaust gas flow through the pipe can be controlled by the obstructing portion.Type: ApplicationFiled: July 10, 2018Publication date: November 8, 2018Applicant: Volvo Car CorporationInventors: Mats LAURELL, Jan DAHLGREN, Peter SANDBERG, Marie STENFELDT
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Patent number: 10066529Abstract: The disclosure relates to an exhaust gas aftertreatment device for purification of exhaust gas emissions. The exhaust gas aftertreatment device is arranged in an exhaust gas passage subsequently of an internal combustion engine and includes an encapsulating portion, a first catalytic substrate and a second catalytic substrate. The second catalytic substrate may be of SCR type. The exhaust gas aftertreatment device includes a reductant injecting device, a pipe and an obstructing portion, where the reductant injecting device is arranged such that reductant is injectable within the pipe and the exhaust gas flow through the pipe can be controlled by the obstructing portion.Type: GrantFiled: June 22, 2015Date of Patent: September 4, 2018Assignee: Volvo Car CorporationInventors: Mats Laurell, Jan Dahlgren, Peter Sandberg, Marie Stenfeldt
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Patent number: 10012124Abstract: An exhaust gas aftertreatment device for an internal combustion engine comprises a housing, first and second catalytic substrates arranged inside the housing such that the first catalytic substrate is arranged upstream of the second catalytic substrate, and a reductant injector arranged in between the first and second catalytic substrates. Further, the first and second catalytic substrates are arranged such that a fluid flow direction through the exhaust gas aftertreatment device is angled. A flow redirecting wall is arranged downstream of the first catalytic substrate such that the fluid flow between the first and second catalytic substrates at least partially passes an outer circumference of the first catalytic substrate before reaching the second catalytic substrate. The redirecting wall is inclined to an outlet surface of the first catalytic substrate and the reductant injector is arranged at the redirecting wall at a position distant from the outlet surface.Type: GrantFiled: June 22, 2015Date of Patent: July 3, 2018Assignee: Volvo Car CorporationInventors: Peter Sandberg, Marie Stenfeldt
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Publication number: 20170276050Abstract: The invention relates to an exhaust gas aftertreatment device for an internal combustion engine, where the device comprises: an exhaust duct allowing a through-flow of exhaust gas; a catalytic NOx converter arranged in the exhaust duct; and a fluid inlet arranged to introduce a liquid reductant into or onto a structure in the exhaust duct upstream the catalytic NOx converter. The invention is characterized in that the structure is a sorption structure having pores configured to retain the liquid reductant in liquid form until it evaporates. The invention also relates to a vehicle provided with such a device.Type: ApplicationFiled: March 16, 2017Publication date: September 28, 2017Inventors: Marie Stenfeldt, Peter Sandberg, Rakshith Ramachandra
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Patent number: 9376951Abstract: A compact exhaust gas aftertreatment device for an internal combustion engine comprises a catalytic converter, wherein the catalytic converter comprises an encapsulating member, a pipe member, an exhaust gas guiding means and two catalytic converter substrates. The exhaust gas aftertreatment device provides very good exhaust gas mixing properties. Additionally, the exhaust gas guiding means is configured to withstand thermal stress due to exposure to hot exhaust gas emissions.Type: GrantFiled: November 7, 2014Date of Patent: June 28, 2016Assignee: VOLVO CAR CORPORATIONInventors: Mats Laurell, Jan Dahlgren, Marie Stenfeldt, Peter Sandberg
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Publication number: 20150377110Abstract: An exhaust gas aftertreatment device for an internal combustion engine comprises a housing, first and second catalytic substrates arranged inside the housing such that the first catalytic substrate is arranged upstream of the second catalytic substrate, and a reductant injector arranged in between the first and second catalytic substrates. Further, the first and second catalytic substrates are arranged such that a fluid flow direction through the exhaust gas aftertreatment device is angled. A flow redirecting wall is arranged downstream of the first catalytic substrate such that the fluid flow between the first and second catalytic substrates at least partially passes an outer circumference of the first catalytic substrate before reaching the second catalytic substrate. The redirecting wall is inclined to an outlet surface of the first catalytic substrate and the reductant injector is arranged at the redirecting wall at a position distant from the outlet surface.Type: ApplicationFiled: June 22, 2015Publication date: December 31, 2015Inventors: Peter SANDBERG, Marie STENFELDT
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Publication number: 20150377111Abstract: The disclosure relates to an exhaust gas aftertreatment device for purification of exhaust gas emissions. The exhaust gas aftertreatment device is arranged in an exhaust gas passage subsequently of an internal combustion engine and includes an encapsulating portion, a first catalytic substrate and a second catalytic substrate. The second catalytic substrate may be of SCR type. The exhaust gas aftertreatment device includes a reductant injecting device, a pipe and an obstructing portion, where the reductant injecting device is arranged such that reductant is injectable within the pipe and the exhaust gas flow through the pipe can be controlled by the obstructing portion.Type: ApplicationFiled: June 22, 2015Publication date: December 31, 2015Inventors: Mats LAURELL, Jan DAHLGREN, Peter SANDBERG, Marie STENFELDT
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Publication number: 20150152767Abstract: A compact exhaust gas aftertreatment device for an internal combustion engine comprises a catalytic converter, wherein the catalytic converter comprises an encapsulating member, a pipe member, an exhaust gas guiding means and two catalytic converter substrates. The exhaust gas aftertreatment device provides very good exhaust gas mixing properties. Additionally, the exhaust gas guiding means is configured to withstand thermal stress due to exposure to hot exhaust gas emissions.Type: ApplicationFiled: November 7, 2014Publication date: June 4, 2015Inventors: Mats LAURELL, Jan DAHLGREN, Marie STENFELDT, Peter SANDBERG
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Publication number: 20120096838Abstract: An exhaust gas treatment arrangement and a method thereof is contemplated for treating exhaust gases flowing along a flow path in an exhaust pipe system. The arrangement comprises a supply element being in communication with a source comprising an ammonia gas. The supply element comprises at least two discharge apertures being adapted to communicate with the flow path such that the ammonia gas may be dispersible from the discharge apertures into the exhaust gases in the flow path in at least two discharge directions.Type: ApplicationFiled: October 21, 2011Publication date: April 26, 2012Applicant: VOLVO CAR CORPORATIONInventors: Peter Sandberg, Marie Stenfeldt