# US 10,480,440 B2 · Particulate matter sensor heat cover

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 10,480,440 B2
- Document ID: US10480440B2
- Status: Granted
- Kind: B2
- Application number: 15/810,185
- Filed: 2017-11-13
- Published: 2019-05-16
- Granted: 2019-11-19
- Earliest claimed: 2017-11-13
- Assignees: GM Global Technology Operations LLC
- Applicants: GM Global Technology Operations LLC
- Inventors: Alessandro Ormando; Francesco Cannarile
- Web page: https://patentgrep.com/patent/US10480440B2

## CPC

- F02D 41/1445: {the characteristics being related to the exhaust flow}
- G01N 7/10: by allowing diffusion of components through a porous wall and measuring a pressure or volume difference
- G01N 15/06: Investigating concentration of particle suspensions (by weighing G01N5/00; investigating sedimentation of particle suspensions G01N15/04; investigating individual particles G01N15/10)
- G01N 15/0656: {using electric, e.g. electrostatic methods or magnetic methods (by investigating individual particles G01N15/1031, G01N15/12)}
- F01N 13/008: {Mounting or arrangement of exhaust sensors in or on exhaust apparatus (sensor arrangements for engine control F02D41/1439)}
- F01N 2510/00: Surface coverings
- F01N 2560/05: the means being a particulate sensor
- F02D 41/1466: {the characteristics being a soot concentration or content}
- G01N 2015/0046: {in gas, e.g. smoke}
- F02D: CONTROLLING COMBUSTION ENGINES (vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed B60K31/00; conjoint control of vehicle sub-units of different type or different function, road vehicle drive control systems for purposes other than the control of a single sub-unit B60W)
- G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q)
- F01N: GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES (arrangements in connection with gas exhaust of propulsion units in vehicles B60K13/00; combustion-air intake silencers specially adapted for, or arranged on, internal-combustion engines F02M35/00; protecting against, or damping, noise in general G10K11/16)

## Abstract

A heat cover for a particulate matter sensor includes an aluminum foil external layer and an internal layer made from a composition including SiO2 of between 52-60%, CaO of between 16-25%, and Al2O2 of between 12-16%. The heat cover is formed as a sleeve structure and includes an open end for receiving the particulate matter sensor.

## Claims

### Claim 1

A heat cover and particulate matter sensor assembly, comprising:
the particulate matter sensor including a housing with a probe extending therefrom and an electrical interface; and
the heat cover formed as a sleeve structure and including an open end receiving the housing of the particulate matter sensor within the sleeve structure, wherein the heat cover includes an aluminum foil external layer and an internal layer made from a composition including SiO2 of between 52-60%, CaO of between 16-25%, and Al2O2 of between 12-16%, wherein the sleeve structure includes a first layer and a second layer that are sewn together along the side edges thereof and the sleeve structure includes a connecting strap extending between the first and second layers.

### Claim 2 (depends on 1)

The heat cover and particulate matter sensor assembly according to claim 1, wherein the internal layer further includes between 8-20% of oxides other than SiO2, CaO and Al2O2.