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JP04001457 |
PURPOSE: To reduce a pumping loss so sharply in a simple structure as well as to improve the extent of output torque at time of low load by installing a first on-off valve, being controlled synchronously with engine speed, and a second o...
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JP04001468 |
PURPOSE: To keep off any hunting in and around a control valve selecting point due to flow characteristic variations within the tolerance of each control valve by installing an opening clamp means which clamps the opening of a control va...
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JP03294634 |
PURPOSE: To accurately control an air-fuel ratio at a catalyst window by resetting an output signal compensation quantity renewed by an output signal compensation renewal means so that the air-fuel ratio is moved to a rich side by only a...
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JP03286159 |
PURPOSE: To achieve both learning control and external turbulence control by shortening the time of the learning control for the feedback correction quantity when an instruction signal for external turbulence control is transmitted, in c...
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JP03279624 |
PURPOSE: To improve combustion performance while property maintaining output torque at the time of low load operation by making open/close control of a second opening/closing valve which opens and closes a communication passage which com...
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JP03264757 |
PURPOSE: To substantially reduce a pumping loss by interposing the second open/close valve in a communication path, provided so as to bypass the first open/close valve in an intake passage, and controlling this second open/close valve in...
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JP03253735 |
PURPOSE: To improve the control accuracy of an intake air quantity at the time of idling by calculating an opening period of a control valve according to idle load of an internal combustion engine, and making the control valve to be open...
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JP03246339 |
PURPOSE: To obtain the optimum air-fuel ratio at all times at what conducts the feedback control of the air-fuel ratio on the basis of variation between an oxygen sensor output value and a comparative reference value, by making an output...
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JP03242438 |
PURPOSE: To decrease a pumping loss by controlling a second opening/closing valve so that an intake air flow which passes through the second opening/closing valve during the closing time of an intake valve may be more than the intake air...
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JP03237237 |
PURPOSE: To properly control output torque by interposing a second opening/ closing valve in parallel to a first opening/closing valve of each cylinder, decreasing a pumping loss with a simple structure, and controlling the second valve ...
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JP03237215 |
PURPOSE: To improve the combustion fuculty by installing the second opening/closing valve in a communication passage communicating to an intake passage on the downstream side of the first opening/closing valve installed in each cylinder ...
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JP03217624 |
PURPOSE: To prevent a pressure detecting means from making erroneous detection beforehand by fixing a fuel injecting quantity constant when a specified condition is set up so as to lead air for cleaning into a pressure extracting passage...
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JP03213660 |
PURPOSE: To prevent the occurrence of a temporary over-rich phenomenon at the time of deceleration by constituting auxiliary air to be supplied into an intake passage at the time of deceleration in an engine in which fuel injection is co...
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JP03189343 |
PURPOSE: To prevent any stall or rough idle from occurring by constituting it to control a control valve with its opening being changed toward the full closure according to the elapsed time after complete explosion in the case where it i...
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JP03145546 |
PURPOSE: To miniaturize an oxygen enriched air feeder by opening a valve mechanism provided on a communicating passage communicating an oxygen- enriched air tank and an internal combustion engine, and feeding the oxygen enriched air to t...
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JP03138452 |
PURPOSE: To improve the throttle response by forming a first bypass passage which makes a detour around a throttle valve installed in the independent intake passage in each cylinder and in which a passage system is throttled and a second...
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JP03121266 |
PURPOSE: To improve stability at the idle rotating time of an engine, where the intake quantity per cycle becomes large, by providing an auxiliary air duct for by passing a throttle valve installed in a specific position in an intake pas...
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JP03117663 |
PURPOSE: To improve start-up performance and decrease white smoke and hydrocarbon in exhaust gas by providing an injector which injects air warmed by a heat means and stored in an accumulator tank, to the inside of a cylinder. CONSTITUTI...
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JP03023353 |
PURPOSE: To prevent the occurrence of unevenness in an air-fuel ratio between cylinders by a method wherein passages for introducing air having a valve member are connected to respective passage parts connected to respective cylinders of...
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JP03015640 |
PURPOSE: To prevent the occurrence of intake air pulsation by keeping the periods of drive signals to each vacuum switching valve identical and dephasing the signals from each other in the device wherein the vacuum switching valves are r...
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JP03003956 |
PURPOSE: To prevent the occurrence of the hunting phenomenon and improve the operation performance and exhaust purification performance by providing a bypass air quantity correcting means correcting the bypass air quantity operated accor...
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JP03000962 |
PURPOSE: To enhance responsibility, acceleration characteristics and the like by first introducing fresh air via an air supply valve during deceleration in a fuel cut device equipped with the air supply valve at the downstream of a throt...
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JP02298637 |
PURPOSE: To correctly control the air-fuel ratio by providing an engine throttle valve and a bypass throttle valve on a carburetor, and trimming the bypass throttle valve by a step motor according to the engine speed and the manifold pre...
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JP02286863 |
PURPOSE: To make the whole device compact and light by arranging an axis of a thermosensitive valve and an axis of an electronic control valve at torstion positions at right angle, respectively, and by sharing an outlet to respective by-...
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JP02241962 |
PURPOSE: To simplify the structure of the secondary air passage by providing a valve element which is connected to an actuator and changed in its position along a designated axis and a valve seat which is connected to a temperature sensi...
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JP02223658 |
PURPOSE: To control an air-fuel mixture over the whole output scope by providing a group of second throttles arranged symmetrically to a vertical axis for an axis of a group of first throttles on the downstream side of the group of the f...
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JP02207167 |
PURPOSE: To allow invariably correct secondary air feeding by driving a secondary air guiding valve opened to feed the secondary air detouring a throttle valve at the time of cranking or the like with a diaphragm device in which the cont...
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JP02204671 |
PURPOSE: To make the continuation of low-speed driving performable even in case of being locked to a high-speed corresponding mode by installing an on-off valve which interrupts the interconnection of a passage in response to a means, de...
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JP02201066 |
PURPOSE: To provide constant control of air fuel ratio even when an air flow control valve mechanism, which is to supply air while detouring the carburettor, is in trouble by furnishing besides such a valve mechanism a bypass air control...
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JP02188659 |
PURPOSE: To carry out the regulation of air/fuel ratio widely with a simple structure by carrying out the opening/closing control of a secondary air feeding valve and a plurality of solenoid valves in accordance with the operating condit...
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JP02181057 |
PURPOSE: To restrain variation of air-fuel ratio by stopping supply of secondary air into an intake system of an internal combustion engine due to the detected signal from an exhaust gas sensor, during a prescribed time after beginning o...
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JP02181058 |
PURPOSE: To improve startability and fuel consumption and prevent defective operation by extending an elastic member made of a shape memory alloy by supplying current to a heating part so as to open a valve mechanism, at on operation of ...
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JP02108842 |
PURPOSE: To make it easy to set the opening characteristics, in the valve device provided with a rotating valve disc which uses one surface of a cylindrical body whose central axis is eccentric as a valve seat surface, by setting the len...
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JP02104928 |
PURPOSE: To prevent fuel-air ratio from becoming excessively rich by determining control quantity for an intake quantity control means according to pressure fluctuation in an intake pipe when a driving system has been disengaged and an e...
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JP02027154 |
PURPOSE: To distribute a uniformly mixed mixture into each cylinder of an internal combustion engine by opening the outlet of an auxiliary air passage being directed to the separating side zone of the internal combustion engine from the ...
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JP01310154 |
PURPOSE: To provide satisfactory starting property by setting a predetermined value of starting temperature of an engine opening a flow controlling valve in a secondary intake air supply path to a smaller value when detected atmospheric ...
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JP01277670 |
PURPOSE: To prevent the use of an air pump from becoming drive resistance by providing a control means for switching an air pump and a compressed air feeding means in other air cylinders in response to the number of revolutions and the l...
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JP01277643 |
PURPOSE: To enable an engine output to be stabilized by suppressing dispersion of a charging amount to an engine, when it is in steady operation, while ensuring responsiveness of the engine, when it is in transient operation, by dividing...
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JP01247752 |
PURPOSE: To constitute the air fuel ratio correction device of a carburetter simply and also inexpensively, by forming an air pump chamber at the diaphragm chamber of a diaphragm type fuel pump, and connecting this air pump chamber to th...
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JP01219324 |
PURPOSE: To aim at enhancement of startability at the time of very low temperature by providing an auxiliary air outlet in a cylindrical member which is provided in an assembled passage of an intake manifold and directing a direction of ...
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JP01170742 |
PURPOSE: To enable combustion condition to be securely detected irrespective of variation in combustion configuration by providing a combustion pressure detecting sensor and combustion light sensor adjacent a combustion chamber of an eng...
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JP01147151 |
PURPOSE: To keep off any overrichness as well as to stabilize an engine speed by opening a flow regulating valve installed in an intake secondary air supply passage as long as the specified time irrespective of oxygen sensor output when ...
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JP01110868 |
PURPOSE: To enable a large flow quantity to be continuously controlled by dividing a flow of air in a bypass passage branching into a large throttle and a small throttle, regulating a pressure of the flow of air through the small throttl...
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JP01096457 |
PURPOSE: To achieve both idle control and assist air control efficiently by setting first intervals for increasing flow of a flow control valve and second interval for reducing flow alternately, and setting the first interval synchronous...
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JP01092565 |
PURPOSE: To prevent controllability from degradation due to deposit of foreign substances on a bearing in a shaft united with a plunger moved by current supplied to a coil and supported in the coil through the bearing, by providing a str...
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JP01069767 |
PURPOSE: To obtain the superior exhaust purifying efficiency by calculating the first and second average values by successively averaging the pressure signals in an intake pipe and judging the deceleration state of an engine according to...
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JP01069747 |
PURPOSE: To improve the fuel consumption by feeding the secondary air into an intake passage and spreading the control range for airfuel-ratio, when the air-fuel-ratio is made overrich by the evaporated gas purge and the min. fuel inject...
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JP01060767 |
PURPOSE: To prevent an engine from stall due to overlean air fuel ration in low speed vehicle by controlling a secondary air amount in an intake system according to the change speed of running parameter showing the speed reduction condit...
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JP01060766 |
PURPOSE: To prevent an engine from stall due to over-lean air fuel ratio in low vehicle speed by stopping the control of secondary air in an intake system according to the changing speed of running parameter in speed reduction when a clu...
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JP01045952 |
PURPOSE: To prevent air-fuel ratio from its rich state and to improve the startability by controlling the opening of a flow regulating valve, provided interposing in a secondary intake air supply passage communicating with inside an inta...
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