Application
This is a knock sensor which detects knocking vibration of the engine using a piezo-electric ceramic. It is used for ignition timing control, and contributes to improved engine performance and reduced fuel consumption. There are two types of sensors, a non-resonant type and a resonant type.

Features

• The frequency characteristics of a non-resonant knock sensor are flat between 5 and 15 kHz, which is the region in which knocking occurs, so the sensor can be used regardless of the type of engine and is highly versatile.
• The resonant knock sensor itself has resonance characteristics, enabling it to produce a large output when knocking occurs.

Application
This sensor can be installed on the gasket of the spark plug to detect the engine combustion pressure and knocking of each cylinder.

Features

• Can be easily installed using the seat of the plug.
• Knocking even within a high speed region can be detected.
• The combustion pressure peak can be detected.
• Can be used for combustion control, including MBT (Minimum Advance for Best Torque), lean limit, and EGR limit.

Application
This sensor is used for a system that automatically switches over the air conditioner between recirculation mode and fresh air mode (auto ventilation control system). It is a gas sensor that judges the quality of the air around the automobile.

Features

• This is an intelligent type gas sensor that contains a microprocessor in the sensor unit.
• It is possible to separately detect CO which is emitted mainly from gasoline vehicles, and NO2 which is emitted from diesel vehicles.
• As a result of NTK's unique signal processing method, it is possible to perform accurate gas detection.
• As the next generation sensor, a unique device that uses MEMS technology is currently being developed, aiming at greater compactness, reduced power consumption and higher performance.