摘要:
An electromagnetic fuel injection valve in which an area of an annular gap formed by a ball valve and a valve seat when the ball valve is lifted is made smaller than cross sectional area of grooves provided on a fuel swirling element which gives fuel supplied a swirling force and further is made larger than a cross sectional area of a fuel injection port, whereby the fuel is injected with an excellent atomizing characteristic.
摘要:
An apparatus for controlling an air-fuel ratio of an internal-combustion engine includes an air-fuel ratio detector, a fluctuation signal generating device, an air-fuel ratio fluctuation device, a 0.5th-order frequency component strength calculator, a fluctuation frequency component strength calculator, a reference component strength calculator, and an imbalance fault determining device. The reference component strength calculator is configured to calculate strength of a reference component in accordance with strength of a first frequency component and strength of a second frequency component. The imbalance fault determining device is configured to make a determination of an imbalance fault in which air-fuel ratios of a plurality of cylinders vary beyond a tolerance limit on a basis of a relative relationship between strength of the 0.5th-order frequency component and the strength of the reference component.
摘要:
In a clutch plate of an annular shape and a wet type, a plurality of lubrication grooves each taking a U-shape in cross-section are formed on a friction engaging surface on at least one end side. The groove is provided with a groove forming portion crossing the circumferential direction and blunt portions extending along both sides of the groove forming portion and connecting the friction engaging surface with the groove forming portion. Where a straight line passing across one side end of the groove and extending in a radial direction is assumed as a virtual straight line, in a section of the groove taken along a plane that is orthogonal to the virtual straight line and that includes the one side end, the width of the blunt portion on one side is in a range of 0.12 to 0.35 mm, and the depth of the blunt portion is in a range of 25 to 50 μm.
摘要:
When determining that a vehicle is not skidding, the ECU carries out tight corner control if vehicle speed is smaller than the upper limit value of the vehicle speed range corresponding to the starting state of the vehicle and the steering wheel turning angle of a steering wheel is greater than or equal to the minimum value of the steering wheel turning angle at which the tight corner braking phenomenon may occur. When determining that the vehicle is skidding, the ECU inhibits the tight corner control even if the vehicle speed is smaller than the upper limit value and the steering wheel turning angle is greater than or equal to the minimum value of the steering wheel turning angle at which the tight corner braking phenomenon may occur.
摘要:
Longitudinal grooves having rectangular cross-sections are formed by surface pressing in the front and/or back surfaces of the metal base plate of a chain guide. In the case of a chain guide for a roller chain, the grooves can be positioned so that they are located opposite the parts of the shoe surface that is contacted by the link plates on both sides of the chain.
摘要:
A radar system comprises: a plurality of reception antennas; a transmission wave generating device; a transmission antenna; a mixer; an A/D converter; a storage device which stores the digitized beat signals in association with each of the reception antennas; a Fourier transformation device which Fourier transforms the stored beat signals; a digital beam forming device which generates beam signals at predetermined pitch angles based on the Fourier transformed signals; an orientation detecting device which detects an orientation of the object using the generated beam signals; a distance detecting device which detects a distance to the object using the generated beam signals; and a signal separation processing device which performs separation processing of the beat signals based on the detected orientation and distance of the object, using the beat signals associated with each of the reception antennas, which are Fourier transformed by the Fourier transformation device.
摘要:
A horn antenna part of a radar apparatus is made of a heat emitting material and includes: an antenna body part having a plurality of horn parts arranged in an array form, wherein each horn part is open toward a front surface of the apparatus, and has a diameter which gradually increases toward the front surface; and a feeder part including a waveguide which communicates with the horn parts, wherein the feeder part is connected to the antenna body part. The radar apparatus also includes: a wireless part for generating a high-frequency signal supplied to the feeder part, and converting a reflected high-frequency signal to a medium-frequency signal; and a circuit part for controlling the high-frequency signal and processing the medium-frequency signal. At least one of the wireless part and the circuit part is arranged in a manner such that it contacts the feeder part.
摘要:
An electromagnetic wave is transmitted from a signal transmission antenna using a signal transmission IC; this electromagnetic wave is received, after having been reflected by a target object, by signal receiving antennas and signal receiving ICs; and the distance to the target object or the azimuth of the target object is detected by a signal processing section. The signal receiving antennas have approximately the same signal receiving characteristics and directivity in approximately the same direction, and are arranged in a row with a predetermined gap between them, thus constituting an antenna array. The levels of the signals received by these signal receiving antennas are detected by a received signal level detection means, and an external objects adhesion detection means decides that some external objects are adhered to the front surface of the signal receiving antennas, if the dispersion, or the level difference, between the levels of these signals received from the antennas is greater than a predetermined value.
摘要:
An electromagnetic wave is transmitted from a signal transmission antenna using a signal transmission IC; this electromagnetic wave is received, after having been reflected by a target object, by signal receiving antennas and signal receiving ICs; and the distance to the target object or the azimuth of the target object is detected by a signal processing section. The signal receiving antennas have approximately the same signal receiving characteristics and directivity in approximately the same direction, and are arranged in a row with a predetermined gap between them, thus constituting an antenna array. The levels of the signals received by these signal receiving antennas are detected by a received signal level detection means, and an external objects adhesion detection means decides that some external objects are adhered to the front surface of the signal receiving antennas, if the dispersion, or the level difference, between the levels of these signals received from the antennas is greater than a predetermined value.
摘要:
A radar system comprises: a plurality of reception antennas; a transmission wave generating device; a transmission antenna; a mixer; an A/D converter; a storage device which stores the digitized beat signals in association with each of the reception antennas; a Fourier transformation device which Fourier transforms the stored beat signals; a digital beam forming device which generates beam signals at predetermined pitch angles based on the Fourier transformed signals; an orientation detecting device which detects an orientation of the object using the generated beam signals; a distance detecting device which detects a distance to the object using the generated beam signals; and a signal separation processing device which performs separation processing of the beat signals based on the detected orientation and distance of the object, using the beat signals associated with each of the reception antennas, which are Fourier transformed by the Fourier transformation device.