Nissan Motor Company Limited

Yasuo Kouda

Kenichi Goto

Hideharu Kadooka

Takahiro Yamafuji

Hiroshi Yoneda

Masahiro Kurita

An engine valve ( ) such as an intake valve or exhaust valve is driven to open or close a corresponding intake or exhaust port by attracting an armature ( ) onto one of first and second electromagnets ( ) and a position of the armature, viz., the position of the engine valve is measured by a permanent magnet ( ) and a Hall effect device ( ). An adhesive layer ( ) whose hardness is lower than the drive axle ( ) is used to attach the permanent magnet ( ) onto the drive axle ( ).

Position measuring device of electromagnetically operated engine valve drive system and method for attaching the same

In an apparatus for controlling an internal combustion engine equipped with an evaporative emission control system comprises an electronic control unit configured to be connected to at least an electronically-controlled throttle and an electronic fuel injection system, the control unit comprises a desired air flow rate setting section setting a desired air flow rate on the basis of at least an opening of an accelerator, and a desired fuel-flow quantity setting section setting a desired quantity of fuel flow on the basis of the desired air flow rate and a predetermined air/fuel ratio. A purge gas flow detection section is provided for detecting a purge-air flow rate of purge air flowing through the purge line and a purge fuel-flow quantity of purge fuel vapor flowing through the purge line. A desired throttle air flow rate is arithmetically calculated by subtracting the purge-air flow rate from the desired air flow rate, whereas a desired fuel-injection quantity is arithmetically calculated by subtracting the purge fuel-flow quantity from the desired quantity of fuel flow. The opening of the electronically-controlled throttle is controlled on the basis of the desired throttle air flow rate, whereas the fuel-injection quantity of fuel to be injected from the fuel injector is controlled on the basis of the desired fuel-injection quantity.

Apparatus for controlling internal combustion engine equipped with evaporative emission control system

In a fuel vapor processor for use with an engine provided with a fuel tank comprising a filler tube which fits on a fuel nozzle for refueling, the presence of leaks of fuel vapor is diagnosed according to a variation of a test pressure has been introduced into a purge passage. If refueling of the fuel tank is being performed during the leak diagnosis, an escape vent for air in the fuel tank is provided by connecting the canister to the atmosphere so that smooth refueling is performed.

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Kawasaki, Japan

Yasuo Kouda