DENSO looks back at its “world-first” technology 40 years later

Everything you need to know in this brief history of lambda sensors

DENSO looks back at its “world-first” technology 40 years later
DENSO Corporation, headquartered in Kariya, Aichi prefecture, Japan.

DENSO first started producing lambda sensors in 1977 and admit earlier systems were quite different to how they function today.

“These systems employed one lambda sensor in the exhaust system to maintain closed-loop air/fuel mixture control, whilst today’s emissions standards require engines to use up to as many as four sensors, monitoring exhaust gas oxygen content as well as catalytic converter efficiency,” DENSO reflects.

With the development of fuel injection systems, light duty Lambda Sensors began to appear.

As environmental and emissions standards were brought in during the early 90s, DENSO created the air/fuel ratio sensor – a world-first innovation – to help meet vehicle manufacturers meet those increased demands and Euro 3 standard onwards.

This world-first technology presents a sensor with a direct output, helping vehicles to satisfy the ever-tightening emission regulations, those that define the acceptable limits for exhaust emissions on all new vehicles sold in EU and EEA member states.

DENSO say its state-of-the-art lambda sensors feature another industry first: a unique aluminium-oxide double trap layer, to increase its lifespan by protecting the ceramic element.

The poor quality of polluted fuel has an adverse effect on the Lambda Sensor performance.

This double-protection cover stabilises the temperature and safeguards the ceramic element against silicone and lead poisoning; leading to better fuel economy, increased engine performance and a decrease in possible engine damage.

For further information from DENSO see ‘more details’ below.

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