Yazaki Corporation

Toyota Jidosha Kabushiki Kaisha

Shinji Narama

Ichiro Kataoka

Kunimitsu Aoki

Kazuyuki Sasaki

Shozo Ashizawa

Toru Kidokoro

Takaaki Itou

Yoshihiko Hyodo

Kimihiko Ikeda

A light leakage preventing structure of a combination meter includes: a plurality of scale plates being arranged so that their edges face each other with a gap being provided therebetween; and a light shielding member to be mounted to rear surfaces of facing portions of the edges. In the structure: the edges of the facing portions of the scale plates are formed into a flat plate shape; and the light shielding member has a dark space opened towards the facing portions.

Illuminated combination meter

A liquid tank includes a tank body forming a reservoir for gasoline G, a flexible partition film 1 arranged in the tank body 1 to divide a space in the tank body into two vertical spaces, a float positioned on the gasoline G, an arm 3 for converting a high and low position of the float 3 into a rotational position of the arm 5, and a potentiometer 5 for detecting a position of the flexible partition film. Since the gasoline G is covered with the partition film, the gasoline G does not vaporize into the air in the tank body an. Even if the gasoline surface is slanted to the tank body an by an acceleration of the vehicle, the flexible partition film serves to restrict the inclination of the surface. Therefore, it is possible to precisely a residual amounts of the gasoline G irrespective of the inclination.

Liquid tank

In a remaining fuel amount measuring apparatus for a fuel tank which is suited to the fuel tank designed to suppress generation of fuel vapor, a CPU actuates a piston to supply a prescribed amount of air into a pressure adjusting chamber, thereby increasing the pressure within the pressure adjusting chamber. From the Boyle's law, the increasing rate of air before air supply is inversely proportional to the volume V of the pressure adjusting chamber. Therefore, the CPU, referring to the pressure within the pressure adjusting chamber before and after the air supply, acquires the volume V of the pressure adjusting chamber, and subtracts the volume V of the pressure adjusting chamber from the internal volume of a tank body to acquire the volume of a fuel chamber, i.e. remaining fuel amount.

Remaining fuel amount measuring apparatus for a fuel tank

In a remaining fuel amount measuring apparatus, a CPU captures remaining fuel amount data detected by a fuel sender unit at prescribed periods through a voltage conversion circuit and A/D conversion circuit, compiles the captured remaining fuel amount data into blocks each composed of a prescribed number of data samples to be successively stored in a RAM. The CPU reads the block data as necessary and subjects the read data to data processing such as simple averaging, weighted averaging or removal of abnormal values. The CPU displays the remaining fuel amount after the data processing on a fuel meter.

Growing community of inventors

Shizuoka, Japan

Shinji Narama