Honda Giken Kogyo Kabushiki Kaisha

Hiroyuki Andou

Takashi Iwamoto

Jun Ashihara

Kotaro Miyashita

Takaaki Nagai

Hiroshi Yatani

Takurou Koyanagi

Shigeki Katou

An inter-vehicle distance measuring apparatus for measuring distance between a target vehicle ahead of a present vehicle following the target vehicle is disclosed, wherein the apparatus is not affected by weather conditions such as rainfall or snowfall. In the apparatus, the target vehicle transmits the first road-surface data, such as the roughness of the road surface, to the present vehicle. Also in the present vehicle, the second road-surface data such as the roughness is also detected, and both detected data are compared. In the present vehicle, the first and second road surface data having the maximum correlation are detected, and the time difference of each detection time of these data is calculated so as to calculate the inter-vehicle distance.

Inter-vehicle distance measuring system and apparatus measuring time difference between each detection time of same road surface condition

A fuel supply control system for an internal combustion engine has an exhaust gas-purifying device arranged in the exhaust system of the engine. When a predetermined high load condition of the engine is detected, an amount of fuel supplied to the engine is increased. Temperature values indicative of the temperature of the exhaust gas-purifying device are stored and a stored temperature value is read out according to operating conditions of the engine. A correction coefficient for correcting the read-out temperature value is determined, and the temperature of the exhaust gas-purifying device is estimated based on the read-out temperature value and the determined correction coefficient. When the predetermined high load condition is detected and at the same time the estimated temperature is higher than a predetermined temperature value, the amount of fuel supplied to the engine is actually increased.

Fuel supply control system for internal combustion engines

A FM radar alarm system for use on a motor vehicle detects a following motor vehicle in an adjacent lane behind the motor vehicle. The FM radar alarm system includes an FM radar module including a near-region monitoring antenna and a far-region monitoring antenna. The near-region monitoring antenna radiates a relatively wide radio-wave beam in a near region positioned behind the motor vehicle and extending over an adjacent lane. The far-region monitoring antenna radiates a relatively narrow radio-wave beam in a far region positioned behind the motor vehicle and extending over the adjacent lane.

Radar module for radar system on motor vehicle

A multichannel radar system for use on a motor vehicle has a plurality of transmission and reception channels each composed of an AM or FM signal generator for generating an AM or FM signal including a carrier which is amplitude- or frequency-modulated by a modulation signal, transmission and reception antennas for radiating the generated AM signal and receiving a return signal reflected by an obstacle, an amplifier for amplifying the received return signal, and either a detector for detecting the amplified return signal or a mixer for mixing the amplified return signal with the FM signal generated by the FM signal generator thereby to generate a beat signal. A power supply circuit supplies DC voltages respectively to the AM or FM signal generators and the amplifiers of the respective transmission and reception channels in a time-division multiplex manner at successive times. A processor calculates a distance up to the obstacle based on either the phase difference between the detected return signals and the modulation signals or the frequencies of the beat signals in the respective transmission and reception channels.

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Wako, Japan

Hiroyuki Andou