TATA BSVI Gasoline_Bifuel Program – EMS ECU Bosch DTC Troubleshooting Service Manual Version: 2.6 Date: 5-10-2023 Prepared By: Pradip Shimpi Checked By: Yeshwant Jadhav Approved By: Sanjeev M. Document Part No: 2921 02 xxx xxxx Page: 442 of 1720 Copyright © TATA MOTORS Ltd. This document must not be used in any way, such as copying and redistributing to third parties, without the consent of author. can be evaluated by the engine’s ECU. The knock Sensor signal is evaluated according to intensity and spectral information of knocking and non-knocking combustions. As a consequence the ignition parameter will be adjusted for the next combustions. Temperature range:- -40 degree C to +180 degree C Mechanical &Electrical characteristics:- Main resonance frequency of Sensor head: > 30 kHz Up to 30kHz the sensitivity must not exceed 200 mV/g. Capacitance (of Sensor head): C = 1150 ± 200 pF Capacitance measured at frequency 1 kHz, parallel; Sensor mounted with torque 20 ± 5 Nm Due to parallel Circuit of both Sensor head and wirecapacitance only the total capacitance can bemeasured. Temperature dependence of capacitance, related to20°C room temperature for temperatures-40 °C ... + 20 °C ≤ 1,9 pF/K for temperatures +20 °C ... + 150 °C ≤ 3,3 pF/K Shunt resistor: 4,9 MΩ ± 20% after ageing: 4 – 10 MΩ(resistance between 2 signal leads) Resistor Pin for supporting sleeve > 1 MΩ Temperature-dependence of sensitivity at 9 kHz: ≤ -0,04 mV/(g*K)
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