Vehicle oxidation catalyst diagnostic strategy

A technology for oxidation catalysts and vehicles, which is applied to chemical instruments and methods, diagnostic devices for exhaust gas treatment devices, machines/engines, etc., and can solve problems such as inability to distinguish oxidation catalysts

Inactive Publication Date: 2017-08-22
GM GLOBAL TECH OPERATIONS LLC
View PDF7 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this diagnostic system may not be able to differentiate whether the oxidation catalyst is operating below normal operating parameters during the regeneration process

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Vehicle oxidation catalyst diagnostic strategy
  • Vehicle oxidation catalyst diagnostic strategy
  • Vehicle oxidation catalyst diagnostic strategy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Reference will now be made in detail to several embodiments of the present disclosure which are illustrated in the accompanying drawings. Wherever possible, the same or similar reference numerals are used in the drawings and the description to refer to the same or similar parts or steps. The drawings are in simplified form and are not drawn to precise scale. For convenience and clarity only, directional terms such as top, bottom, left, right, up, above, above, below, below, rear and front may be used with respect to the figures. These and similar directional terms are not to be construed as limiting the scope of the present disclosure in any way.

[0020] Referring to the drawings, wherein like reference numerals correspond to like or analogous parts throughout the several figures, figure 1 A vehicle 10 is schematically shown in FIG. Vehicle 10 may comprise a motorized vehicle such as, but not limited to, a standard passenger car, sport utility vehicle, light truck, ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A system and method for diagnosing the oxidation catalyst of a vehicle includes an engine, an exhaust system in fluid communication with an exhaust port of the engine and an oxidation catalyst connected with the engine via the exhaust port to receive an exhaust stream from the engine. A controller is operable to determine the operating state of the engine and vehicle, calculate a heat release value for the oxidation catalyst and determine an ideal heat release value. The controller will determine the oxidation catalyst efficiency by calculating a ratio of the heat release value to the ideal heat release value.

Description

technical field [0001] The present invention relates to oxidation catalyst systems of the type used on vehicles. Background technique [0002] Internal combustion engines typically include exhaust aftertreatment devices, such as diesel particulate filters, three-way catalytic converters, and the like. Exhaust aftertreatment devices have been developed for effectively limiting exhaust emissions in internal combustion engines. In the case of compression ignition or diesel engines, considerable effort continues to be devoted to the development of practical and efficient means and methods for reducing the emission of large quantities of carbonaceous particulates in the exhaust gas. An oxidation catalyst is one of the devices commonly provided in diesel engines for this purpose. [0003] A typical exhaust system incorporates an oxidation catalyst to reduce emissions in diesel engines. The oxidation catalyst oxidizes hydrocarbons (HC) and carbon monoxide (CO) formed during comb...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): F01N11/00F01N3/10F01N9/00
CPCF01N3/106F01N9/00F01N11/002F01N2560/06F01N2560/14F01N2900/0416B01D53/944B01D53/9495F01N3/0253F01N3/103F01N9/002F01N2550/02F01N2900/1602Y02T10/40Y02A50/20F01N3/0234
Inventor C·E·迪恩
Owner GM GLOBAL TECH OPERATIONS LLC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap