摘要:
A vehicle running guidance system using magnetic markers for the purpose of reducing the number of magnetic markers to be laid on a road surface. The magnetic nails are laid as magnetic markers on a road. The radio wave generator tags are also laid. The radio wave generator tags transmit road curve data for a distance of about 100 m in the running direction. Power for the radio wave generator tags is supplied from a magnetic generator on a vehicle. On the vehicle, the relative displacement from a magnetic nail is detected by a magnetic sensor, and at the same time the road curve data from radio wave generator tags is received by a radio wave receiving device. The controller determines the amount of steering, based on relative displacement with respect to magnetic nails and road curve data, and supplies it to the actuator. Transmission of road curve data contributes to reducing the number of magnetic nails.
摘要:
A control device for an internal combustion engine having an oxygen sensor, and calculation means for calculating a weight of oxygen fed to the internal combustion engine. The oxygen sensor outputs a signal corresponding only to a density of oxygen contained in intake gas fed to the engine. The oxygen sensor has a diffusion layer having pores through which oxygen molecules pass, the pores having a diameter less than or equal to the mean free path of the oxygen molecules contained in the intake gas.
摘要:
A prism has at least two optical planes and one of the planes is a boundary plane with mixed fuel. On one of two planes, a light emitting element is mounted and illuminates light to the boundary plane through the prism. A light receiving element receives light reflected from the boundary plane and converts the reflected light into electrical signals. Then a detector modifies the electrical signals from the light emitting element according to the detecting result and outputs them as detecting signals representative of the fuel mixture ratio. The temperature of the mixed fuel may be detected by a temperature sensor in which case the electrical signals are also modified to compensate for temperature changes of the mixed fuel.
摘要:
A combustion process sensor for detecting combustion processes occurring in a combustion chamber of an engine has a generally tubular mounting casing to be screwed into a threaded hole in the combustion chamber wall and a quartz-glass rod axially extending in the mounting casing and held in position therein. The casing includes two axially aligned generally tubular members rigidly secured together at their own ends. The quartz-glass rod has a first portion remote from a sensing end thereof adapted to be exposed to combustion flame in the combustion chamber, and a second portion between the first portion and the sensing end. The first portion is secured to one of the two tubular members of the casing, while the second portion is supported from the casing only by a vibration damping material disposed in engagement with the outer peripheral surface of the quartz-glass rod and the inner peripheral surface of the casing.
摘要:
An apparatus and method for detecting an intake air mass flow rate using a Karman vortex air flow arranged in an intake passage of an internal combustion engine, in accordance with the formula:.gamma.(x)=.gamma.(760).times.V.sub.p (x)/V.sub.p (760)where .gamma.(x) is an intake air density to be obtained; .gamma.(760) is the air density under standard atmospheric pressure, V.sub.p (x) is the amplitude value of the analog signal obtained from the Karman vortex air flow sensor; and V.sub.p (760) is the amplitude value of the analog signal under standard atmospheric pressure.
摘要:
A method of detecting the ignition time point of an engine by detecting the ignition of the engine by the detection of the burning flame light of the fuel in the combustion chamber of the engine and by photoelectrically converting the burning flame light thus detected into an electrical signal so as to determine the ignition time point of the fuel, which comprises the steps of: (a) converting the burning flame light detected by the flame sensor into a voltage signal through photoelectric converting means; (b) applying said voltage signal to a comparator and comparing said electrical signal with a reference voltage; (c) varying said reference voltage in accordance with the running conditions of the engine; and (d) detecting the ignition time point from the resulting output signal from said comparator, and an apparatus for the same. With this construction, the ignition time point of the engine can be accurately detected and improvements in the fuel consumption rate as well as the transmission efficiency can be realized thereby.
摘要:
An electronic control fuel supply system for use in an internal combustion engine. The system includes a .lambda. sensor adapted to digitally vary an output signal in response to the air-fuel ratio of an air-fuel mixture being supplied to the engine, and an integrating circuit. The input of the integrating circuit is connected to the output of the .lambda. sensor and has a time constant whereby the open duration of a fuel injection valve provided in the engine intake system is controlled by the output voltage of the integrating circuit. In this fuel supply system, the time constant of the integrating circuit is changed from a first value to a smaller second value after the start of acceleration of the internal combustion engine and during the time that the air-fuel ratio of the mixture is larger than a predetermined value. The integrating circuit is connected to a fuel-amount control circuit which in turn is connected to the fuel injection valve which opens into the intake system of the engine.
摘要:
A gas component detection apparatus for detecting gas components contained in an exhaust gas from a combustion device and determining an air-fuel ratio of an air-fuel mixture supplied thereto. A gas component detecting element composed of a semiconductive metal oxide is contacted by the exhaust gas andexhibits variable electric resistances according to the concentrations of the gas components. The electric resistance is taken out as an electric signal through two electrodes disposed either on the surface of the detecting element exposed to the exhaust gas or within the detecting element adjacent that exposed surface. A porous coating layer having an exhaust gas permeability covers the surface of the detecting element exposed to the exhaust gas so as to prevent poisonous substances contained in the exhaust gas from depositing on that exposed surface of the detecting element. The coating layer is formed of a metal oxide having electrically insulating properties and carries therein a catalyst promoting an oxidation reaction of the exhaust gas. The detecting element exhibits an abruptly changed electric resistance when the actual air-fuel ratio of the air-fuel mixture supplied into the combustion device is deviated from a stoichiometrical air-fuel ratio, thereby enabling the control of the air-fuel ratio of the air-fuel mixture.
摘要:
A lane change detecting system includes an emission unit for emitting a predetermined signal, the emission unit being provided in a boundary between lanes of a road so that the predetermined signal emitted by the emission unit is affected by a mobile body which crosses the boundary between the lanes, a receiving unit which is provided in the boundary between the lanes for receiving the predetermined signal emitted by the emission unit and outputting a receiving signal corresponding to the received signal, and a determination unit for determining, based on a state of the receiving signal from the receiving unit, whether a mobile body crossed across the boundary between the lanes.
摘要:
A ceramic substrate and a metallic layer formed thereon are bonded closely by means of a bonding layer formed between the ceramic substrate and the metallic layer. The ceramic substrate comprises either alumina or a ceramic containing alumina, and the metallic layer comprises either molybdenum (Mo) or an alloy composed of molybdenum (Mo) and at least one of titanium (Ti), zirconium (Zr) and niobium (Nb). The bonding layer comprises composite oxides of aluminum and at least one of titanium (Ti), zirconium (Zr) and niobium (Nb) and formed by either a process of (1) forming an intermediate layer comprising at least one of titanium (Ti), zirconium (Zr) and niobium (Nb) between the ceramic substrate and the metallic layer, and subjecting the laminated substance to a heat treatment to a cause a reaction between alumina and the intermediate layer; or (2) forming an alloy layer comprising an alloy of molybdenum (Mo) and at least one of titanium (Ti), zirconium (Zr) and niobium (Nb) directly on the ceramic substrate, and subjecting the laminated substance to a heat treatment to cause a reaction between alumina and at least one of titanium (Ti), zirconium (Zr) and niobium (Nb) contained in the alloy layer.