Unlock instant, AI-driven research and patent intelligence for your innovation.

Exhaust gas temperature analysis apparatus, method, and program

A technology of exhaust gas temperature and exhaust gas, which is applied to thermometers, measuring devices, thermometer applications, etc., can solve problems such as reducing calculation time, and achieve the effects of reducing calculation time, high precision, and high reliability

Inactive Publication Date: 2009-09-02
TOYOTA JIDOSHA KK +1
View PDF1 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, when conventional techniques are used to perform high-resolution calculations, for example, in the case of determining temperature in units of 0.1K, since the number of theoretical spectra used for matching increases more, reducing calculation time becomes more important. serious problem

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
  • Exhaust gas temperature analysis apparatus, method, and program
  • Exhaust gas temperature analysis apparatus, method, and program
  • Exhaust gas temperature analysis apparatus, method, and program

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] Exemplary embodiments of the present invention are described with reference to the accompanying drawings. figure 1 The overall structure of the analyzer 1 used in the embodiment of the present invention is shown. The analyzer 1 irradiates the exhaust gas with an infrared laser beam 10, and includes a ring-shaped sensor base 6 inserted into an exhaust pipe 5A of an engine 3 mounted on an engine stand 2 and connected to an exhaust pipe mounted on a vehicle. Between the exhaust pipe 5B of the exhaust manifold 4 a of the engine 4 , and including the light emitting optical fiber 7 and the light receiving optical fiber 8 provided on the sensor base 6 .

[0024] Such as figure 1 As shown, for example, the sensor base 6 may be inserted between the flange portions of the exhaust pipes 5a, 5b. The sensor base 6 has a through hole 6 a having substantially the same inner diameter as the exhaust pipe 5A ( 5B). The surface of the through hole 6a is a reflective surface 6b for in...

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

PropertyMeasurementUnit
wavelengthaaaaaaaaaa
Login to View More

Abstract

A method for analyzing a temperature of exhaust gas includes calculating an approximate temperature (Ta) at least one time by fitting a measured spectrum to a portion of theoretical spectra defined in association with a first temperature range (TC to TD) using a temperature (Tb, Tc, Td) determined in the an immediately previous preceding temperature analysis as a reference, and then determining a calculated temperature (Tss) by fitting the measured spectrum to all the theoretical spectra over a second temperature range (TE to TF) that is narrower than the first temperature range, using the approximate temperature (Ta) as a reference.

Description

technical field [0001] The invention relates to an exhaust gas temperature analysis device, analysis method and analysis program. Background technique [0002] A conventional device passes a laser beam through exhaust gas and determines the concentration and temperature of a specific gas component based on the transmittance of the specific component (for example, see Japanese Patent Application Publication No. 2004-117259 (JP-A-2004-117259)). [0003] In particular, JP-A-2004-117259 describes a processing unit such as a personal computer installed in a vehicle that analyzes the concentration of gas components contained in engine exhaust gas and the temperature of the engine exhaust gas. [0004] In the technique described in JP-A-2004-117259, the intensity I of the transmitted light of the measurement laser beam and the intensity I of the light of the reference laser beam are measured o The signal strength ratio I / I o . When calculating the concentration of the gas compon...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G01K13/02
CPCG01K2205/04G01K13/02G01K11/125
Inventor 山阴正裕牟田研二山口祥启浅海慎一郎福田宪弘
Owner TOYOTA JIDOSHA KK