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Delphi Flat Response Knock Sensor

Delphi Flat Response Knock Sensor
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Delphi Flat Response Knock Sensor The Delphi Flat Response Knock Sensor is a self-generating piezoelectric sensor. Commonly mounted on an engine block or cylinder head, it produces an output voltage in proportion to the engine vibrations caused by knock. When knock is present on the sensor signal, the engine control module (ECM) controls knock by retarding spark timing, or diesel injection timing. Self-generating piezoelectric design requires no power to the sensor Flat frequency response allows the same senor to be used on different engines and the sensor responds to knock frequencies higher than the primary frequency Ground-isolated design with two-wire shielded harness helps protect the sensor signal from electro-magnetic interference (EMI) Large mounting hole accommodates mounting bolts up to 10 mm in diameter Typical Applications Delphi Flat Response Knock Sensors (Conventional and Mini Sensor configurations shown with integrated and pigtail connectors.) The Delphi Flat Response Knock Sensor is designed for use on virtually any internal combustion engine, including: • • Two stroke engines Alternative fuel engines Diesel engines Flexible fuel engines Performance Advantages The Delphi Flat Response Knock Sensor has a flat frequency response over a range of from 1 to 18 kHz, thus the same sensor can be used on different engines by simply adjusting the filter frequency of the signal processing electronics to match the knock frequency of the engine. In addition, the sensor responds to knock frequencies higher than the primary knock frequency. This allows the higher knock frequencies to be used by a control system, either individually or combined with the primary knock frequency. Performance Specifications Voltage output Linearity Mounting hole Operating temperature range Environment Electrical connectors Package size www.delphi.com | © Delphi. All rights reserved. | Average output 27 ± 10 mV/g over 1 to 18 kHz into a 100 K Ω resistive load Output stays within ± 15 percent of average value at the limits of 1 to 18 kHz Accommodates mounting bolts up to 10 mm in diameter -40° C to 150° C Sensor and connector are sealed to withstand humidity, salt spray, automotive fluids and general automotive environments Various harness lengths, alternative connectors, or connector at sensor body can be accommodated A: Available in sizes of 29.8 mm and 25 mm B: Available in sizes of 24.35 mm and 20 mm

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Delphi Flat Response Knock Sensor Typical Installation and Behavior This chart demonstrates the range of dimensions that can be accommodated with the Delphi Flat Response Knock Sensor mounting bolt. Typical Transfer Function Axial Input Only This chart demonstrates the behavior of the Delphi Flat Response Knock Sensor throughout the range of frequencies from 1 to 18 kHz The Delphi Advantage Delphi has one of the industry's most complete portfolios of sensors. Delphi has the experience and the expertise to provide extremely reliable, highly accurate and very cost competitive sensors for a...

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