Exhaust gas burner system, motor vehicle, exhaust gas burner device and temperature control method

The exhaust gas burner system addresses inefficiencies by using fuel heat exchange for temperature regulation, enhancing combustion efficiency and reducing emissions while minimizing space requirements.

DE102025103140B3Active Publication Date: 2026-06-03VOLKSWAGEN AG
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Patent Information

Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
VOLKSWAGEN AG
Filing Date
2025-01-29
Publication Date
2026-06-03

AI Technical Summary

Technical Problem

Existing exhaust gas burners in motor vehicles face inefficiencies due to high fuel viscosity during cold starts, leading to reduced energy utilization and increased emissions, particularly with diesel fuel, and existing heating methods are either slow or require additional energy and space.

Method used

An exhaust gas burner system that utilizes heat exchange between the exhaust gas burner and fuel to regulate temperature, incorporating a temperature control device for efficient and compact operation, using existing vehicle components for fuel delivery and heat exchange.

Benefits of technology

Enables simultaneous preheating of fuel, improves combustion efficiency, reduces emissions, and requires minimal installation space by leveraging existing vehicle resources for temperature control.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention relates to an exhaust gas burner system (10) for a motor vehicle (100), the exhaust gas burner system (10) comprising an exhaust gas burner device (20) for exhaust gas temperature control, a temperature control device (22) for temperature control of the exhaust gas burner device (20), a storage interface (52) for fluid communication between the exhaust gas burner system (10) and a storage device (50) for storing fuel (102), a drive interface (40) for fluid communication between the exhaust gas burner system (10) and a drive device (110) of the motor vehicle (100), and at least one conveying device (30), wherein the at least one conveying device (30) is configured to convey the fuel (102) from the storage interface (52) to the exhaust gas burner device (20), to the temperature control device (22), and / or to the drive interface (40).wherein the temperature control device (22) comprises an inlet device (24) for supplying fuel (102) to the temperature control device (22) and an outlet device (26) for draining fuel (102) from the temperature control device (22), and the temperature control device (22) is configured for heat exchange between the exhaust gas burner device (20) and the fuel (102). The invention further relates to a motor vehicle (100), an exhaust gas burner device (20), and a temperature control method (200).
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