# US 2017/0254249 A1 · Susceptor for use in a fluid flow system

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- Number: US 2017/0254249 A1
- Document ID: US20170254249A1
- Status: Published application
- Kind: A1
- Application number: 15/448,108
- Filed: 2017-03-02
- Published: 2017-09-07
- Earliest claimed: 2016-03-02
- Assignees: Watlow Electric Manufacturing Company
- Applicants: Watlow Electric Manufacturing Company
- Inventors: Mark D. Everly; Richard T. Williams; James N. Pradun
- Web page: https://patentgrep.com/patent/US20170254249A1

## CPC

- F01N 9/005: {using models instead of sensors to determine operating characteristics of exhaust systems, e.g. calculating catalyst temperature instead of measuring it directly}
- F01N 3/023: using means for regenerating the filters, e.g. by burning trapped particles
- F01N 3/027: using electric or magnetic heating means
- F01N 3/2006: {Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating (by electrically controlling the supply of combustible mixture or its constituents only F02D41/0235)}
- F01N 3/2013: {using electric or magnetic heating means}
- F01N 9/00: Electrical control of exhaust gas treating apparatus (monitoring or diagnostic devices for exhaust-gas treatment apparatus F01N11/00; conjoint electrical control of two or more combustion engine functions F02D43/00)
- F01N 9/002: {of filter regeneration}
- F01N 11/002: {the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus}
- F01N 11/005: {the temperature or pressure being estimated, e.g. by means of a theoretical model}
- F01N 13/0097: {the purifying devices are arranged in a single housing}
- F02D 41/024: {to increase temperature of the exhaust gas treating apparatus}
- F02D 41/1446: {the characteristics being exhaust temperatures}
- F02D 41/1447: {with determination means using an estimation}
- F02D 41/22: Safety or indicating devices for abnormal conditions {(in air/fuel ratio feedback systems F02D41/1495, in electric control linkage F02D11/107, in purge control systems F02M25/0809)}
- F02D 41/222: {relating to the failure of sensors or parameter detection devices}
- G01F 1/68: by using thermal effects
- G01F 1/86: Indirect mass flowmeters, e.g. measuring volume flow and density, temperature or pressure
- G01K 7/16: using resistive elements
- G01M 15/05: by combined monitoring of two or more different engine parameters
- G05D 23/185: with auxiliary non-electric power
- G05D 23/2401: {using a heating element as a sensing element}
- G05D 23/30: Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature
- G07C 5/0808: {Diagnosing performance data (testing of vehicles G01M17/00; testing of electrical installation on vehicles G01R31/005)}
- H05B 1/0227: {Applications}
- H05B 1/0244: {Heating of fluids (H05B1/0247 takes precedence)}
- H05B 3/0042: {used in motor vehicles}
- H05B 3/141: {Conductive ceramics, e.g. metal oxides, metal carbides, barium titanate, ferrites, zirconia, vitrous compounds}
- H05B 3/18: the conductor being embedded in an insulating material
- H05B 3/20: Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater (H05B3/62, H05B3/68, H05B3/78, H05B3/84 take precedence)
- H05B 3/40: Heating elements having the shape of rods or tubes (H05B3/62, H05B3/68, H05B3/78 take precedence)
- F01N 3/021: by means of filters
- F01N 3/0814: {combined with catalytic converters, e.g. NOx absorption/storage reduction catalysts}
- F01N 3/103: {Oxidation catalysts for HC and CO only}
- F01N 3/106: {Auxiliary oxidation catalysts}
- F01N 3/2066: {Selective catalytic reduction [SCR]}
- F01N 2240/10: a heat accumulator
- F01N 2240/16: an electric heater, i.e. a resistance heater
- F01N 2240/36: an exhaust flap
- F01N 2410/00: By-passing, at least partially, exhaust from inlet to outlet of apparatus, to atmosphere or to other device
- F01N 2410/04: during regeneration period, e.g. of particle filter
- F01N 2550/22: of electric heaters for exhaust systems or their power supply
- F01N 2560/06: the means being a temperature sensor
- F01N 2560/07: the means being an exhaust gas flow rate or velocity meter or sensor, intake flow meters only when exclusively used to determine exhaust gas parameters
- F01N 2560/12: Other sensor principles, e.g. using electro conductivity of substrate or radio frequency
- F01N 2560/20: Sensor having heating means
- F01N 2610/102: after addition to exhaust gases, e.g. by a passively or actively heated surface in the exhaust conduit
- F01N 2900/0416: using the state of a sensor, e.g. of an exhaust gas sensor
- F01N 2900/1404: Exhaust gas temperature
- F01N 2900/1406: Exhaust gas pressure
- F01N 2900/1411: Exhaust gas flow rate, e.g. mass flow rate or volumetric flow rate
- F01N 2900/1602: Temperature of exhaust gas apparatus
- F02D 2041/1433: {using a model or simulation of the system}
- F02D 2041/228: {Warning displays}
- F28F 2200/00: Prediction; Simulation; Testing
- G01K 2205/04: for measuring exhaust gas temperature
- H01C 7/02: having positive temperature coefficient
- H01C 7/04: having negative temperature coefficient
- H05B 2203/019: Heaters using heating elements having a negative temperature coefficient
- H05B 2203/021: Heaters specially adapted for heating liquids
- H05B 2203/022: Heaters specially adapted for heating gaseous material
- Y02T 10/12: Improving ICE efficiencies
- Y02T 10/40: Engine management systems
- 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)
- 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)
- G01F: MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01K: MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR (radiation pyrometry G01J5/00)
- G01M: TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G05D: SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G07C: TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- F28F: DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION (water and air traps, air venting F16)
- H01C: RESISTORS
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A susceptor for use in a heated fluid flow system is provided. In one form, a susceptor is arranged within a conduit and adapted to absorb radiant energy from at least one heating element and inhibit the radiant energy from being absorbed by the at least one wall of the conduit and/or other components. In another form, the susceptor absorbs and inhibits the radiant energy from being absorbed by the outer wall of the conduit.

## Claims

### Claim 1

A conduit for use in carrying a fluid flow, the conduit comprising:
at least one wall defining an outer boundary of the conduit and configured to allow for fluid flow through the conduit;
at least one heating element positioned proximate the heated conduit operable for heating the fluid flow; and
a susceptor arranged adjacent the heating element and adapted to absorb radiant energy from the at least one heating element and inhibit the radiant energy from being absorbed by the at least one wall of the conduit.

### Claim 2 (depends on 1)

The conduit according to claim 1, further comprising a plurality of heating elements adapted to heat the fluid flow.

### Claim 3 (depends on 2)

The conduit according to claim 2, wherein the susceptor is adapted to inhibit radiant energy from being absorbed by adjacent heating elements.

### Claim 4 (depends on 1)

The conduit according to claim 1, wherein the susceptor provides a support structure to at least one heating element.

### Claim 5 (depends on 1)

The conduit according to claim 1, wherein the susceptor is supported by and spaced apart from the at least one wall of the conduit by a support member.

### Claim 6 (depends on 1)

The conduit according to claim 1, wherein the susceptor comprises at least one susceptor wall disposed inside the at least one wall of the conduit, wherein the susceptor wall is thinner than a thickness of the at least one wall of the conduit.

### Claim 7 (depends on 1)

The conduit according to claim 1, wherein the susceptor comprises a reflective material to reduce radiant heat transfer away from the susceptor.

### Claim 8 (depends on 1)

The conduit according to claim 1, wherein the susceptor is isolated from the at least one wall of the conduit.

### Claim 9 (depends on 1)

The conduit according to claim 1, wherein the susceptor comprises a configuration selected from the group consisting of concentric louvres, radial blades, circumferential fins, a liner, a helical member, and combinations thereof.

### Claim 10 (depends on 1)

The conduit according to claim 1 further comprising a second heating element positioned in the fluid flow and downstream of the conduit.

### Claim 11 (depends on 10)

The conduit according to claim 10, wherein the susceptor is arranged between the second heating element and the at least one heating element.

### Claim 12

A diesel engine exhaust system comprising:
a conduit adapted to carry exhaust fluid flow, the conduit positioned upstream from a catalyst system of the diesel exhaust system;
at least one heating element disposed proximate an outer wall defining at least a portion of the conduit; and
a susceptor arranged adjacent the heating element and being adapted to absorb radiant energy from the at least one heating element and inhibit the radiant energy from being absorbed by the outer wall of the conduit.

### Claim 13 (depends on 12)

The diesel engine exhaust system according to claim 12, further comprising a plurality of heating elements adapted to heat the fluid flow.

### Claim 14 (depends on 12)

The diesel engine exhaust system according to claim 12, wherein the susceptor provides a support structure to the at least one heating element.

### Claim 15 (depends on 12)

The diesel engine exhaust system according to claim 12, wherein the susceptor comprises a configuration selected from the group consisting of concentric louvres, radial blades, circumferential fins, a liner, a helical member, and combinations thereof.

### Claim 16 (depends on 12)

The diesel engine exhaust system according to claim 12, wherein the susceptor is spaced apart from the outer wall by a support member.

### Claim 17 (depends on 12)

The diesel engine exhaust system according to claim 12, wherein the susceptor comprises a reflective material to reduce radiant heat transfer away from the susceptor.

### Claim 18 (depends on 12)

The diesel engine exhaust system according to claim 12, wherein the susceptor comprises at least one susceptor wall disposed inside the at least one wall of the conduit, wherein the susceptor wall is thinner than a thickness of the at least one wall of the conduit.

### Claim 19 (depends on 12)

The diesel engine exhaust system according to claim 12, wherein the susceptor is isolated from the at least one wall of the conduit.

### Claim 20 (depends on 12)

The diesel engine exhaust system according to claim 12, further comprising insulation between the susceptor and the outer wall of the conduit.

### Claim 21 (depends on 12)

The diesel engine exhaust system according to claim 12, wherein the susceptor is paired with an insulating blanket.