Knock Detection System – Knock Sensor Controller 2 (KSC2)

139

What does the KSC knock detection system do?

The Knock Sensor Controller (KSC) is an engine knock detection system which outputs a 5 volt signal and 12 volt signal when it detects engine knock.

The knock frequency is user programmable and the knock frequency of an engine can be found using the in-built “Knock ID” tool.

The knock volume threshold is also user programmable and the knock volume threshold can be found using the in-built “Baseline” tool.

Outputs

The 5 volt output can be sent to the engine’s ECU so it can retard ignition timing.

The 12 volt signal can be connected to audio or visual indicators to alert the driver in real-time. We recommend the use of a visual indicator like LED strip especially in noisy vehicles.

Mounting

The Knock Sensor Controller unit is designed to be mounted in the engine bay, away from heat and moisture.

Programming

The KSC unit is programmed via Bluetooth using the KSC2 Android app.


Knock Sensor Controller (KSC) – Features

Adjustable knock frequency

Using the in-built Knock ID tool the minimum and maximum monitored frequency can be selected. This helps compensate for installation, knock sensor location and engine characteristics which may move the actual knock frequency away from the theoretical knock frequency of the engine.

Adjustable knock volume threshold

When the volume threshold and count threshold are met or exceeded the unit will output a 12 volt signal (max 3 amps) and a 4.5 volt signal (max 2 mA). These can be used to integrate the knock signal with a device of your choice.

RPM dependent monitoring.

The MoviChip KSC2 uses a 0-15 volt rpm signal input. The knock volume threshold will change according to the RPM of the engine.

Knock ID

The Knock ID tool shows you the volume signal from the knock sensor for each frequency band.

By using a known conservative ignition timing map, we can compare the volume vs a map where we have induced light knock.

The frequency band where the volume has changed will indicate the knock frequency.


Audible Knock Monitoring

A way to audibly detect engine knock is essential in setting up the KSC. Fortunately it is extremely cheap to build a high quality, DIY knock detection system with a Windows laptop.

You read more details of how you can make your own audible knock sensor monitor here.

Because this solution for audible monitoring is so cheap and effective we have not burdened the KSC with audible monitoring. If you only need audible knock monitoring then we highly recommend this free option.


Knock Detection System – Benefits

Installation

The MoviChip KSC control unit is designed to be mounted permanently on the vehicle, in the engine bay. This is typical of most MoviChip products and we do this to simplify installation. You do not need to find space to mount an ECU box in the cabin of the car and you do not need to runs wires from the engine bay into the cabin or splice into the wires inside the cabin. The KSC is designed to be a largely fit-and-forget item.

Adjustment

We like big screens and we dislike having to scroll through menus using arrows and buttons. This is why we harness the power of modern Android smartphones. Big screen means you do not have to dig through menus to get to what you need

Unobtrusive

You only need to use the app if you want to adjust settings or to check data coming from the unit. In normal use you just get in the vehicle and drive.


Knock Sensor Controller – Specs

Knock Detection System Connections

Ignition Power (12v)

Power Ground

Signal Ground

Knock Sensor +

Knock Sensor Ground

RPM Signal (0-15v)

5 volt output – Knock Warning Output to Engine ECU (2mA max)

12 volt output – Buzzer/LED Power etc (3 amp Max)

12 volt output – Negative


Settings

Knock Signal Gain

Knock Frequency

Knock Signal Volume Threshold


Knock Detection System – What Is Included?

Knock Sensor Controller 2.0 Unit

Industrial grade connector and crimps

Android App – Download from the MoviChip website

User Manual – Download from the MoviChip website

What else is required

Android device with Bluetooth.

User built wiring loom

Knock sensor – We recommend Bosch or Bosch-type knock sensors part number 0261231173 or equivalent.
Genuine Bosch sensor and connectors can be bought here.
Bosch-type knock sensors and connectors can be bought at online auction sites


Knock Sensor Controller – Quick Start Guide

Knock Frequency

We need to define what will count as a knock frequency, our knock frequency calculator will get you started. The Knock ID tool will confirm the knock frequency

Baseline

With a conservative ignition timing map where we know no knock will occur, turn on the “Baseline” tool and carry out a high load run from 1000 rpm to redline. Before lifting throttle, press “Off”.

The Baseline tool will output the peak volumes.

Enter volumes slightly higher than these in the “Saved Volume” sections. You have now set your volume threshold.

The KSC will output the 12 volt and 5 volt signals when the volume threshold is exceeded. The volume threshold is interpolated between RPM points.


IMPORTANT

The Knock Sensor Controller should never be used as the exclusive device to monitor engine knock and for safe engine operation in general.

Engine safety and knock should be monitored by numerous sensors to ensure there is some redundancy if any sensor or device experiences a problem.


Engine Knock Detection System Terminology

Knock Sensor Gain

The volume we will monitor, as outputted from the knock sensor during normal engine activity

Frequency

The frequency window we listen to for knock. We set the minimum and maximum frequency.

Knock Volume Threshold

The volume level, which if exceeded, will count as a knock event.


Order Online - Got a question? Send us a message

Delivery Time

Typically delivery time is between 2 & 6 weeks depending on where you are in the world.

Order online & we will reply with the delivery time.

If you are happy with the quoted delivery time, we will send you a payment request with PayPal.

PayPal: Select “PayPal” as the payment method at the checkout.

Post Office: We send our products with post office to try and avoid our customers having to pay excess charges to customs brokers. However we can’t guarantee that your product will enter your country without taxes and tariffs but we will do what we can at our end.


Order Online - Got a question? Send us a message

KSC App

Click here to download the KSC App. Note, the app will only work when connected to the KSC unit.

https://movichip.com/media/ISM_EVO_12.apk


Order Online - Got a question? Send us a message

KSC Manual

Click here to download the Knock Sensor Controller (KSC) manual.

Click to access KSC_manual.pdf


Order Online - Got a question? Send us a message