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

Apparatus for measuring the particle concentration of motor vehicle exhaust

一种颗粒浓度、机动车的技术，应用在测量装置、散射特性测量、内燃机测试等方向，能够解决大气受颗粒污染、影响测量精度等问题，达到小化测量误差、高精度、改善精度的效果

Inactive Publication Date: 2016-03-23
ROBERT BOSCH GMBH
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For test equipment used in workshops, the atmosphere is usually significantly polluted by particles and thus significantly affects the measurement accuracy

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
  • Apparatus for measuring the particle concentration of motor vehicle exhaust
  • Apparatus for measuring the particle concentration of motor vehicle exhaust
  • Apparatus for measuring the particle concentration of motor vehicle exhaust

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] figure 1 The measuring device 1 according to the first exemplary embodiment of the invention shown in , has a measuring chamber 26 with a light source 4 , which is designed, for example, as a laser and emits light into the measuring chamber 26 during operation. The measuring chamber 26 is equipped with two light sensors 6a, 6b. exist figure 1 In the schematic illustration of , the light sensors 6a, 6b are shown outside the measuring chamber 26 for reasons of better clarity, although in practice they are at least partially arranged in the measuring chamber 26 or at the measuring chamber 26 Room 26 on. The light sensors 6 a , 6 b detect the light emitted by the light source 4 , which is diffused by the particles in the measurement chamber 26 (diffuse light). The light sensors 6 a and 6 b are preferably arranged here such that they each detect light diffused at different angles.

[0028] The two light sensors 6 a , 6 b are connected to an evaluation unit 8 , which eval...

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 device (1) for measuring particle concentrations in exhaust gases of motor vehicles, the device having a measuring chamber (26), at least one light source (4) and at least one light sensor (6a, 6b), the measuring chamber being capable of Filled with the gas particle mixture to be measured. The light sensors (6a, 6b) are designed to detect light diffused by particles present in the gas particle mixture. The exhaust gas conveying device ( 22 ) is designed to convey the exhaust gas to be measured to the measuring chamber ( 26 ). Particle-free zero gas can be delivered to the measuring chamber ( 26 ) from a zero gas source ( 12 ). A switching element (30) is arranged between the exhaust gas delivery device (22) and the measurement chamber (26) and is adapted to selectively allow or prevent the delivery of exhaust gas into the measurement chamber (26).

Description

technical field [0001] The invention relates to a device for measuring the particle concentration of exhaust gases from motor vehicles. Background technique [0002] For the measurement of particles and other colloids in exhaust gases, diffuse light methods are generally used, in which the colloids to be measured are guided through a measuring chamber. Here, for example, a laser is used as a light source, so that the light emitted by the light source is diffused by the particles present in the colloid. In addition, there is at least one, but preferably a plurality of light sensors, which detect light diffused by the particles (scattered light). The light sensors may be arranged at different angles with respect to the incident direction of light. [0003] Basically, the relevant components such as light sources, light sensors and electronic evaluation circuits of the sensor signals have different offset mechanisms (Offset mechanism) and drift mechanisms (Drift mechanism), w...

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 Patents(China)
IPC IPC(8): G01M15/10G01N21/51
CPCG01N1/2252G01N21/274G01N21/51G01N21/53G01N33/0006G01N15/075
Inventor K.施滕格尔G.哈加M.诺伊恩多夫R.西格
Owner ROBERT BOSCH GMBH