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Lambda Sensors Download Report. Published on Dec View Download 7. Manufactured to the strictest OEM Standards. Subjected to rigourous safety and peformance tests. These are the exceptional standards behind DENSOs Lambda Sensors – an outstanding aftermarket programme of heated and unheated configurations guaranteed to match each vehicle perfectly every time. As one of the worlds foremost developers and manufacturers of original vehicle parts and systems, DENSO understands Lambda Sensor technology better than anyone else.
But thats not just our opinion – leading vehicle manufacturers agree! In fact since we first produced them inseveral hundred lnaos DENSO Lambda Dzewoo have been doing their job measuring the oxygen in vehicle emissions worldwide; making us one of the leading Lambda Sensor manufacturers in the world. We use our unrivalled knowhow in each and every Lambda Sensor we make. Which is why, aktalog you need a replacement Lambda Sensor, theres only one name to choose: But they also offer all the dzewoo technologies youll need to find exactly the right OEM quality replacements for your customers: Theres no need for add-on parts such as flange adaptors!
DENSO recommends changing them as often as specified by the vehicle manufacturer. But Lambda Sensors should also be checked for functioning and efficiency at every vehicle check-up – an engine thats old or showing signs of excessive oil consumption will need the Sensors changed at shorter intervals than specified.
Lambda Sensor failure – whether through normal ageing, the use of leaded fuels or contamination – can lead to damage of daewol Catalytic Converter and czdi expensive repairs. Failed Lambda Sensors can also cause higher emissions, increased fuel consumption and reduced engine performance including poor acceleration, stalling and idling.
Pre Catalyser Lambda Sensor2. Post Catalyser Lambda Sensor3. Pre Catalyser Lambda Sensor5. Post Catalyser Lambda Sensor6.
Post Catalyser Lambda Sensor8. Pre Catalyser Lambda Sensor9. TransmissionLeftRightWarningThe illustrations above represent typical engine mounting configurations.
There are many variations depending on laons and model. Please refer to the complete application list in this catalogue to choose the correct DENSO Lambda Sensor for a specific application location. Thread cleaning tap size M18x1,5 for most Sensors. Torque wrench with suitable Lambda Sensor socket.
Zndkerzen und Glhkerzen Katalog – [PDF Document]
If needed, clean the thread in the exhaust pipe with a cleaning tap. Only apply grease to the Sensor thread. Tighten the Sensor to the prescribed torque, using a torque wrench with a suitable Lambda Sensor socket. Take care not to damage the wires!
Parts suppliedLambda Sensor, copper grease, connectors,heat-shrinkable butt splices. Ratchet crimping tool with red die for insulated terminals. Torque wrench with suitable Lambda Sensor driver size 22 for most Sensors. Cut the new Sensor wires to length. The new Sensor with the old connector must be the same length as the old Sensor and connector originally.
Cut the old Sensor wires to length. Strip the wire ends to a length of 7mm. Crimp the butt-splices with a ratchet crimping tool with red die size 22 – Shrink the insulation of the butt-splices with hot air, until they are sealed. Tighten the Sensor to the prescribed torque, using a torque wrench with a suitable Lambda Sensor driver. Connector Keep clean and dry: Sensor body Keep clean: These holes need to stay open to enable the Sensor to function.
Sensor body thread Grease the thread: Sensor nose Avoid sudden impact: The Teflon isolated wires have a core of stainless steel strands for extra strength, surrounded by nickel coated copper wires for good conductivity and low resistance. Allows atmospheric oxygen to enter the Sensor without permitting water or engine contaminants to seep into the casing. Resists corrosion and contamination with a rugged, watertight body. DENSO Lambda Sensors feature a unique, protective coating of aluminium oxide on the ceramic element to help ensure the Sensor takes accurate measurements and has a long lifetime.
The aluminium oxide trap layer therefore plays an active role in delivering optimal emissions, fuel economy, engine performance and prevention of engine damage. Maintains proper unit temperature for quicker response times and protects the ceramic element against silicone and lead poisoning. Solving the fuel quality dilemmaPoor quality or polluted fuel can have an adverse effect on Lambda Sensor lifespan and performance – but DENSO Sensors provide the solution.
What causes the problem? Fuel can be contaminated by engine oil additives such as detergent dispersant or lubricant; petrol additives; sealing compound on engine parts; and crude oil deposits after desulphurisation.
Contaminated fuel can emit a poisonous vapour if heated over degrees Celcius, which affects the Lambda Sensor by clogging or poisoning the electrodes.
This is a common cause of early Lambda Sensor failure. The unique aluminium oxide double trap layer we apply surrounding the Sensors ceramic element protects it from problem fuel; maintaining its lifespan and efficientperformance. Check the connector and lead wire to ensure no damage has occurred. Damage of any kind will affect the Sensor signal. Check the Sensors protection sleeve for signs of damage that could indicate a dent or crack inside.
It is important that the Sensor element is intact in order to work correctly. Check that the connector is clean, intact and water-tight; and that there are no signs of grease, lubricants or chemicals on it. These can affect the Sensors delicate output signals which are highly sensitive to contamination. This can be caused by a damaged Sensor heater or a faulty fuel system.
Certain ingredients of fuel additives can contaminate the Sensor element. Follow-up checkIn all cases, a contaminated Lambda Sensor must be replaced. After replacing the Sensor, however, it is also important to check the function of the Catalytic Converter.
Contamination can also damage the Converter by reducing its capacity. What role do Lambda Sensors play? In order to reduce emissions, modern cars have been designed to carefully control the amount of fuel they burn.
The Lambda or Oxygen Sensor is a critical component in this process, Its goal is to work together with the cars fuel injection system, catalytic convertor and electronic control unit ECU Fig.
The Lambda Sensor does this by monitoring the percentage of unburned oxygen present in the cars exhaust gases. This exhaust gas cleaning system removes as many vaewoo the harmful emissions as possible from the exhaust before it leaves the car. Where are the Lambda Sensors positioned? Every new car, and most cars manufactured sincehas a Lambda Sensor. The exact location of the Lambda Sensor varies according to whether the vehicle has a V-type or Daeeoo type exhaust system, and depending on make and model.
How exactly do Lambda Sensors katalpg Lambda Sensors work together with the vehicles fuel injection system, Catalytic Converter and engine management system or electronic control unit ECU Fig. Theoretically, at this ratio, all of the fuel will be burned using almost all of the oxygen in the air. The remaining oxygen must be exactly the right quantity for the Catalytic Converter to function efficiently. Most modern cars are equipped with a three-way Catalytic Converter.
The exact amount of oxygen in the exhaust gasses is important to the Catalytic Converter because it affects how well it is able to remove these harmful emissions from the exhaust gases. The right amount of oxygen enables a chemical reaction to take place between the harmful gases and the oxygen, resulting in harmless gases leaving the Catalytic Converter.
If the converter is working correctly, all the oxygen in the exhaust gases will be consumed by this chemical reaction. Engine with Sensors and Catalytic Converter. Pre Cat Lambda Sensor3. The amount of fuel injected is adjusted by means of injection time feedback compensation control. When the mixture is found to be too rich, fuel injection is decreased.
When the mixture is found to be too lean, fuel injection volume is increased Fig. What is the ideal stoichiometric ratio? For petrol, the stoichiometric, or purification ratio is about The fuel mixture varies from kataolg ideal ratio quite a bit during driving, which is the reason why it must be monitored and adjusted.
Sometimes the mixture can be lean an air-to-fuel ratio higher than Purification ratio of Catalytic Converter. Why do some vehicles feature more than oneLambda Sensor? Many recently produced vehicles feature a second Lambda Sensor mounted after the Catalytic Converter post-cat Lambda Sensoras well as a Lambda Sensor placed before it pre-cat Lambda Sensor.
The rear, post- cat Lambda Sensor is the monitor Sensor, monitoring the function ofthe Catalytic Converter. How does the second Lambda Sensor analyse the efficiency of the Catalytic Converter?