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| DIESEL PARTICULATE FILTER (DPF) DELATE PRESSURE

HOW IT WORKS

Benefits

• Improves engine life

• Signals when an engine’s diesel particulate filter needs to be regenerat-

ed for efficient emissions reductions

• Offers increased accuracy and robustness in harsh gas exhaust environ-

ments

• Helps detect cracks or other issues with the diesel particulate filter

Measures changes in pressure to help insure a reduction of harmful soot emissions and compliance with emissions standards in support of a clean

environment.

Introduction

1

2

Mechanical

Deflection

3

Silicon

Piezoresistive

Effect

4

ASIC Signal

Conditioning

5

Radiometric

Output

Pressure

Differential

gas environments

HOW IT WORKS

Manufacturers

Pressure

Differential

Upstream and

Downstream Exhaust

1

Mechanical

Deflection

of Silicon Sense

Element

2

Silicon

Piezoresistive

Effect

MEMs Die

3

ASIC Signal

Conditioning

4

Ratiometric

Output

5

1

2

3

4

EXHAUST

FLOW

DPF

1

PRESSURE

DPS

Sense

Element

5