User Manual - AMEET Electro Systems
Contents
1. Remove top nut which is attached to vertical bolt Put the sensor in bolt amp fix it with top nut as shown below Keep the sensor horizontally with base plate Accordingly adjust the height of nut Insert Wire lug into sensor terminals as per tag attached Interchange of these wires may damage the sensor circuit Now sensor fixture is ready for demo VECV Resistance Measurement All checks described below are performed using Digital Multi meter DMM The actual values are measured between corresponding terminals and compared with the specified rated Nominal values Resistance measurement of individual sensor Sr No Check Sensor End Rated value 1 Cam Phase sensor 1 and 2 as shown in figure 5 8350 Crankshaft sensor 8820 2 Boost Pressure sensor a Pressure sensor 4 and 1 as shown in figure 4 600 at Open Air b Air temperature sensor 2 and 1 as shown in figure 4 1 6kQ at Room Temp Connector lock Connector Sa a a Cn fo a v VECV Understanding the working of Sensors Preparation Take a pair of wire Red Black 1 metre long insert banana plugs to DC power supply unit at 12V socket Insert other end Red plug to Demo bench s Red socket and Black plug to Demo bench s Black socket Now 12V DC supply is available at Demo bench to use You can also use 12V DC supply directly from DC power supply unit to s2. VECV Vehicle Sensor Demo Fixture LED Based User Manual Operating Instructions Start up guide Brief theory of sensors Sensor mounting on fixture Resistance measurement test Understanding the working of Sensors Troubleshooting amp Ff amp FF Ft VECV Table of Contents Start up Guide occ cccceccsecseceseesessessescesseeseeceesesesssaaeeaees 3 gt Checking the Contents Brief Theory Of Sensors cccscceecsesseesesessessessessececeecaeees 4 gt Cam Phase Sensor Crankshaft Sensor gt Boost Pressure Sensor Sensor mounting on Fixture Optional cecce 7 gt Cam Phase Sensor Crankshaft Sensor gt Boost Pressure Sensor Resistance Measurement ecceecceeeceeceeceneeceeeeseesees 8 gt Cam Phase Sensor Crankshaft Sensor gt Boost Pressure Sensor Understanding the working of Sensors scseeee 9 gt Cam Phase Sensor Crankshaft Sensor gt Boost Pressure Sensor Troubleshooting ou cee ceccsessesesseeesaceeeeececeeceseesesaeeeetees 11 VECV Start up Guide Checking the Contents Vehicle Sensors unit consists following 1 Sensor Fixture 1 in PVC box e Cam Phase Sensor Crankshaft Sensor Fixture 1 unit 2 Sensor Fixture 2 in PVC box e Boost Pressure Sensor Fixture 1unit e PVC pipe 1pc Brief Theory of Components CAM Phase sensor It is mounted on cyl Block on exhaust side At feed pump position It Gives Voltage output
3. ensor fixture Note Always use 12V DC supply unless otherwise specified Cam Phase sensor Crankshaft sensor Red LED indicates variation in magnetic field Green LED indicates generation of output voltage Connect 12V DC supply to V amp V terminals of sensor fixture Connect multi meter to signal o p terminals of sensor fixture Being AC multi meter terminals can be connected in any polarity Select multi meter range as 2000mV 2V AC In ideal state multi meter reads zero voltage and all LEDs are off Now rotate flywheel in either direction multi meter will display voltage Red LED blinks as flywheel rotates Blinking speed is proportional to flywheel speed Green LED blinks when output signal is generated Blinking speed is fixed constant and is not proportional to signal output voltage VECV Boost Pressure sensor Red LED indicates flow of supply voltage current Yellow LED indicates Pressure signal output voltage amp blinks if pressure varies Green LED indicates Temperature signal output voltage amp blinks if temperature varies Connect 12V DC supply to V amp V terminals of sensor fixture Red LED will start glowing one by one After this Yellow amp Green LED will start glowing one by one a To measure Pressure signal ofp Connect multi meter red probe to Pressure signal o p terminal of sensor fixture Connect multi meter common V GND black probe to V t
4. erminal of sensor fixture Select multi meter range as 2000mV 2V DC In ideal state multi meter reads around 887mV 0 887V for room pressure Yellow LED glows constant as Pressure is constant To create more pressure insert pipe in sensor amp blow air at other end of pipe Now multi meter reading increases as pressure increases Yellow LED blinks as pressure increases Blinking speed is fixed constant and is not proportional to pressure Note Green LED may blink when pressure is applied as flow of air increases the sensor temperature b To measure Temperature signal o p Connect multi meter red probe to Temperature signal o p terminal of sensor fixture Connect multi meter common V GND black probe to V terminal of sensor fixture Select multi meter range as 20V DC In ideal state multi meter reads around 2 55V for room temperature Green LED glows constant as temperature is constant To increase temperature switch ON heater Red LED will start glowing one by one and at end bulb will glow Now multi meter reading decreases as temperature increases Yellow LED blinks as temperature varies Blinking speed is fixed constant and is not proportional to temperature Note Green LED will blink even if Heater Bulb is switched off till sensor temperature reaches to room temperature 3 VECV Troubleshooting If sensor does not work properly then perform voltage measurement to locate the fa
5. is mounted on Inlet Manifold It senses the engine air intake pressure amp temperature with Turbocharger tgives Voltage output proportional to air intake to ECU it is used for determining the fueling qty with respectto air intake pressure Measuring principle The boost pressure Sensor element consists of silicon diaphragm which contains Several Piezo resistive Semiconductors The boost pressure acts on the diaphragm causes change in electrical resistance in Circuit thus change in output voltage Which goes to ECU as a signal VECV VECV Sensor mounting on fixture Optional If sensor is not mounted on Demo Fixture then follow below steps to mount sensor on fixture Tools required Screwdriver suitable size 1 no Spanner No 10 2 no Cam Crankshaft Sensor Fixture Take Cam Phase sensor Crankshaft sensor Perform Resistance measurement on sensor Remove Nut Bolt which is attached to L clip Fix the sensor to L clip as shown below Maintain air gap between flywheel amp sensor as 0 7 to 1 4mm Accordingly add remove the washers in between sensor amp L clip Insert Wire lug into sensor terminals Interchange of these wires does not affect performance Now sensor fixture is ready for demo LED Fixture for y wv Cam Phase Crankshaft Sensor Sout of AC mv Boost Pressure Sensor Fixture Take Boost pressure sensor Perform Resistance measurement on sensor
6. pulse on occurrence of Teeth on cam shaft It is used to give feedback signal to ECU for correct timing The sensor helps in quick starting as com pared to crankshaft sensor due to single rotation of camshaft per power stroke Functional Principle Sensor generates electrical signal from the camshaft tone wheel Used along with the crankshaft sensor to detect the TDC position of the cylinders The tone wheel varies the magnetic field of the sensor resulting in the generation of output voltage CAM Sensor Mounting Position on Engine Cylinder block RH Side VECV Cam shaft with Tone Wheel for sensing correct timing by Cam Sensor Hall Effect Principle Bai Ea D U Hall voltage l X Beea Ra Hall constant U Ry x s Supply current t Brew Magnetic Induction t Thickness of the Hall element Operating Principle Is the generation of a potential difference the Hall voltage across and electrical conductor transverse to an electric current in the conductor and a magnetic field perpendicular to the current VECV Crankshaft sensor VR variable reluctance HA VW WV N high flux density Engine speed is sensed by the ECU through this sensor Sensor generates sinusoidal voltage signal from the tone wheel mounted next to the flywheel The sinusoidal voltage is converted to speed signal by the ECU Boost pressure sensor It
7. ult All checks described below are performed using Digital Multi meter DMM The actual values are measured between corresponding terminals and accordingly fault is located Voltage measurement of sensor on fixture Sr Sensor Fixture Check Observed Sensor Fault No value 1 Cam Phase sensor Signal o p zero Open short Crankshaft sensor voltage 2 Boost Pressure sensor Pressure signal o p and V a 11 2V Pressure terminal 4 is open b OV Pressure terminal 4 is short to V Temp signal o p and V a 4 7V NTC terminal 2 is open b OV NTC terminal 2 is short to V gt
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