48V electrically heated catalyst system for vehicle

A technology of electric heating and catalyst, applied in vehicle parts, electrochemical generators, batteries, etc., can solve problems such as poor low temperature performance

Pending Publication Date: 2021-05-04
VITESCO TECH USA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The 48V system 10' could provide more power to the EHC 20', but this is undesirable due to the extra components and poor low temperature performance of the 48V lithium-based battery 24

Method used

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  • 48V electrically heated catalyst system for vehicle
  • 48V electrically heated catalyst system for vehicle
  • 48V electrically heated catalyst system for vehicle

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Embodiment Construction

[0017] refer to image 3 , shows a vehicle exhaust system, generally indicated at 10 ″, for use with an internal combustion engine 12 having an intake arrangement 14 and an exhaust arrangement 16 according to an embodiment. The system 10 ″ includes a catalytic converter, preferably of the three-way type The exhaust device 18 is configured to be coupled to the exhaust device 16 . Catalytic converter 18 includes an electrically heated catalyst (EHC) 20' operating at 48V. According to this embodiment, an ultracapacitor structure or bank 28 is electrically connected between the EHC 20' and a 12V battery 22, preferably a lead-acid battery. Ultracapacitor bank 28 includes a plurality of individual ultracapacitors C1-C4 ( Figure 5A ), which are wired together to increase their voltage or power. Each supercapacitor C1-C4 can be an arrangement with multiple capacitors to achieve 12V. Supercapacitors are conventional electrical energy storage devices that have the ability to s...

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PUM

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Abstract

The present invention relates to a 48V electrically heated catalyst system for a vehicle, and provides amethod for powering a 48V electrically heated catalyst of a catalytic converter of the vehicle without using a 48V battery. The method provides a 12V battery. An electrical energy storage device is electrically connected between the electrically heated catalyst and the 12V battery. The electrical energy storage device is charged by the 12V battery so as to store a voltage of 12V that can then be switched to 48V. The electrically heated catalyst is powered with 48V supplied by the charged electrical energy storage device. A system for performing the method is also disclosed.

Description

technical field [0001] The present invention relates to a vehicle emission system with an electrically heated catalyst (EHC), and more particularly to an emission system with a 48V EHC and a 12V battery as the sole power source. Background technique [0002] refer to figure 1 , a conventional vehicle exhaust system, indicated generally at 10, for use with an internal combustion engine. Engine 12 has an intake 14 and an exhaust 16 . System 10 includes a three way catalytic converter 18 coupled to exhaust 16 . The catalytic converter 18 includes a 12V operated electrically heated catalyst (EHC) 20 powered by a 12V lead acid battery 22 to reduce cold start emissions as it enables the catalytic converter 18 to fire quickly. However, due to the limitations of lead-acid and absorbed glass mat (AGM) batteries, the 12V battery 22 cannot supply enough power to the 12V operated EHC 20 to utilize the full potential of the EHC 20 . [0003] figure 2 Another conventional vehicle ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/20H02J7/00
CPCF01N3/2013H02J7/0063H02J7/345H02J2207/50Y02A50/20F01N2240/16F01N9/00F01N2900/104H01G11/10H01G11/08Y02T10/12Y02T10/40H01M2220/20H01M10/06H01M16/00Y02E60/10F01N3/101
Inventor B·巴格曼B·J·麦凯A·A·阿布贝卡默罕默德萨胡尔
Owner VITESCO TECH USA
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