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JP61200365 |
PURPOSE: To improve drivability of an engine, by providing an opening and closing valve in an intake secondary air supply passage while a control means closing the opening and closing valve when the engine is in high loaded operation. CO...
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JP61200367 |
PURPOSE: To prevent drivability from worsening, by providing an opening and closing valve in an intake secondary air supply passage while a control means closing the opening and closing valve when a transmission is placed in a low speed ...
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JP61200368 |
PURPOSE: To prevent drivability from worsening, by providing an opening and closing valve in an intake secondary air supply passage while a control means stopping the supply of intake secondary air when an engine is in high loaded operat...
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JP61200363 |
PURPOSE: To promote the stable condition of combustion of an engine, by providing an opening and closing valve in an intake secondary air supply passage while a control means closing the opening and closing valve when the engine is at a ...
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JP61200362 |
PURPOSE: To promote the stable condition of combustion of an engine, by providing an opening and closing valve in an intake secondary air supply passage while a control means closing the opening and closing valve when a speed shift is ch...
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JP61197751 |
PURPOSE: To enable correct control of air-fuel ratio of supplied mixture air to a desired objective air-fuel ratio by controlling a flow rate regulating valve based on output level of an oxygen density sensor. CONSTITUTION: In a control ...
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JP61192830 |
PURPOSE: To improve specific fuel consumption and engine output by suspending the air-fuel ratio feedback control and controlling the air-fuel ratio to the rich side in comparison with the case of 2-wheel drive, when a driving-wheel sele...
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JP61190132 |
PURPOSE: To obtain damping effect by exhaust brake by providing an auxiliary air flow path opening to a lower side of a throttle valve and a control valve opening and closing the auxiliary air flow path. CONSTITUTION: An exhaust shutter ...
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JP61187569 |
PURPOSE: To control the air-fuel ratio at high precision by increasing or decreasing the open period of a switching valve controlling the air-fuel ratio of the air-fuel mixture by predetermined values respectively depending on whether th...
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JP61187570 |
PURPOSE: To prevent the hunting of the air-fuel ratio by setting the target air-fuel ratio in response to at least two engine operation parameters and controlling a switching valve based on the comparison between the output level of an o...
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JP61171872 |
PURPOSE: To spray liquid fuel gathering in a suction pipe during cold starting and warming-up operation and to promote evaporation, by a method wherein the air is communicated with the interior of or a portion in the vicinity of a fuel r...
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JP61171860 |
PURPOSE: To prevent after-burn and suppress torque shock, by continuing to supply a primary air to a downstream of a throttle valve for a predetermined period in a region where fuel cut is released at an engine rotational speed less than...
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JP61138826 |
PURPOSE: To scavenge a spark plug as well as to improve an engine starting characteristic ever so better, by installing a heating device in an auxliary air passage which jets a part of an air-fuel mixture in a carburetor toward the spark...
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JP61118551 |
PURPOSE: To improve the control resolution by arranging a bypass valve openable/closable upon exceeding-lowering of duty ratio over/below specific level through differential altitude in parallel with duty solenoid valve path for air-fuel...
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JP61116067 |
PURPOSE: To improve the fuel supply response and the fuel atomization by providing one fuel injection valve per one cylinder, fuel supply passages between the injection port and two air intake passages and a device for supplying air insi...
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JP61085561 |
PURPOSE: To prevent an engine from stalling, by providing a neutral position detector for a shot air valve, which is put out of operation at the time of low- temperature start of the engine, to put the valve in operation again at the tim...
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JP61081566 |
PURPOSE: To make the quantity of feed of secondary air proper by introducing an intake-air negative pressure on the lower course of a throttle valve into one chamber of a secondary air control valve which is partitioned by a diaphragm, a...
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JP61081534 |
PURPOSE: To secure the desired horsepower in time of acceleration as well as to prevent drivability from getting worse, by installing a control circuit which controls an air-fuel ratio to a reference value if variation speed of the detec...
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JP61079854 |
PURPOSE: To eliminate difference in the quantity of supply of fuel and the remaining of fuel by making the direction of the opening of an additional air passage perpendicular to a line connecting cylinders while making the opening direct...
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JP61070162 |
PURPOSE: To improve the engine stability during idling by installing a nozzle projecting into a suction passage in the opened port part on the downstream side of a throttle valve in a bypass air passage which bypasses the throttle valve....
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JP61053450 |
PURPOSE: To improve a rate of fuel consumption ever so better, by forming a small hole in a part of a vent pipe lying between an engine chamber and a carburetor, while feeding it with air out of an air cleaner via a pipe bypassing the ca...
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JP61025658 |
PURPOSE: To obtain proper an air-fuel ratio by linear controlling electrostrictive element driving frequency and fuel injection rate, and controlling driving voltage of an air pump corresponding to driving frequency of the electrostricti...
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JP61004854 |
PURPOSE: To obtain the engine characteristic superior in the whole revolution range by varying the effective area of an annular passage formed between the inner peripheral surface of a suction passage and a small venturi by a subthrottle...
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JP60249639 |
PURPOSE: To prevent the formation of the air-fuel ratio in overrich state by supplying the secondary intake air according to the result of judgement for the air- fuel ratio on the basis of the concentration of exhaust components when an ...
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JP60249640 |
PURPOSE: To prevent the air-fuel ratio from forming the overrich state by carrying-out the air-fuel ratio feedback control for supplying the secondary intake air according to the result of the judgement for the air-fuel ratio on the basi...
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JP60247046 |
PURPOSE: To aim at improvements in the responsiveness of an engine and reduction in a rate of fuel consumption, by constolling a rate of fuel to be processed by an atomizer, in case of a fuel-injection type gasoline engine. CONSTITUTION:...
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JP60243356 |
PURPOSE: To improve the performance of an internal-combustion engine and to purify the exhaust gas of the engine, by forming two secondary-air supply passages on the downstream side of a throttle valve of a carburetor, and interposition ...
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JP60243360 |
PURPOSE: To atomize fuel into superfine particulates and make mixture thin to contrive perfect combustion by a method wherein a net having superfine holes is provided between a suction manifold and a carburettor in the internal-combussti...
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JP60224925 |
PURPOSE: To aim at improvements in combustibility ever so better, by installing a flow control valve, controlled according to engine operating conditions, interposingly in a passage which leads such air as approximating to the atmosphere...
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JP60212665 |
PURPOSE: To achieve good atomized/mixed condition over the entire operating region by ejecting air toward the injection nozzle of fuel injection valve provided in the downstream of gate valve upon lowering of the opening of the gate valv...
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JP60204918 |
PURPOSE: To prevent an exhaust gas from flowing backward even in a low speed range by branching a low-speed intake passage and a high-speed intake passage from the lower course of a throttle valve and opening and closing each passage by ...
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JP60192868 |
PURPOSE: To prevent the excessively condensed state of fuel in the mixed gas in the case when a throttle valve is sharply closed and excessive engine brake by installing an air chamber for temporarily storing air and an always-closed ope...
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JP60182311 |
PURPOSE: To supply a mixture gas with optimum air-to-fuel ratio as in layers by furnishing a fuel supply part overstream the convergent point of suction pipes, allowing an air supply passage to open at a point overstream the suction valv...
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JP60178943 |
PURPOSE: To supply a mixture having an optimum air-fuel ratio, by providing an auxiliary passage bypassing between the upstream side and downstream side of a throttle valve, a control valve for controlling the flow rate of air and a cont...
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JP60173360 |
PURPOSE: To aim at the promotion of reduction in the cost of production, by securing an air-fuel ratio controlling range corresponding to the operation state of an engine, while simplifying the constitution of a pneumatic system aimed at...
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JP60173334 |
PURPOSE: To control an engine at theoretical air-fuel ratio or thereabouts by changing a standard value of the density of oxygen during high load operation. CONSTITUTION: A signal corresponding to the density of oxygen in an exhaust is d...
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JP60169628 |
PURPOSE: To reliably produce swirl and to perform lean combustion, by a method wherein a port, which sucks air in a tangential direction, is formed in a side wall in the vicinity of a bottom dead point within a cylinder, and the air is c...
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JP60166744 |
PURPOSE: To improve the combustion performance by providing means for separating oxygen from air flow and feeding into intake pipe and allowing supply of oxygen into the intake pipe upon decision of light load condition of engine through...
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JP60162044 |
PURPOSE: To make stable air-fuel ratio control attainable, by using both oxygen sensors, one having such a characteristic as suddenly changing its output before a stoichiometric air-fuel ratio and the other having the same characteristic...
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JP60150466 |
PURPOSE: To perform air/fuel ratio control of PI operation through simple structure by providing a valve in one of intake secondary air feed paths and a delay system in the upstream while an air control valve in the other path. CONSTITUT...
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JP60135639 |
PURPOSE: To improve the starting performance and the driving performance of an engine, by operating a first and a second control valves selectively such that the sum of the opening areas of a first and a second auxiliary air passages is ...
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JP60135656 |
PURPOSE: To minimize delay of response and make valve unit common by a method wherein the valve unit, which controls the amount of air supplied into the suction pipe of the internal-combustion engine, and an actuator, which controls the ...
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JP60119358 |
PURPOSE: To prevent deterioration of operation ability and engine stall, by feeding control pressure into pressure receiving chamber through pressure feeding means under specific operational condition thereby quickening opening of air co...
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JP60098157 |
PURPOSE: To supply optimum idle mixtuer by controlling idle fuel and air bypassing a throttle valve with a solenoid controlled by duty ratio according to the engine condition. CONSTITUTION: A negative pressure operated valve 18 provided ...
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JP60088859 |
PURPOSE: To prevent engine output power from temporarily dropping so that the performance of accelerating running is enhanced, by providing a secondary air feeding means for feeding secondary air which dilutes recirculated exhaust gas fo...
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JP60088858 |
PURPOSE: To aim at enhancing the output power and at reducing the amount of detrimental component in exhaust gas, by disposing an oxygen enriching membrane downstream of the filter element of an air-cleaner, and as well by disposing a co...
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JP60085244 |
PURPOSE: To make it possible to simply adjust the scattering in the air-fuel ratio of carburetors as thet are manufactured by adjusting an air flow to bypass the venturi of the carburetor. CONSTITUTION: An air passage 7 is provided for a...
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JP60081436 |
PURPOSE: To properly supply an engine with air or an air-fuel mixture of its demand, by installing an on-off valve in an auxiliary passage, while providing a driving part which operates a coil being fed with two type of currents and the ...
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JP60079129 |
PURPOSE: To make it possible to supply an appropriate amount of intake-air with a simple structure, by providing a shut-off valve having two sets of coils for changing the stroke of a valve element, in an auxiliary passage for air or mix...
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JP60067754 |
PURPOSE: To aim at improvements in a rate of fuel consumption in particular, by making air-fuel ratio control at each carburetor performable in a separate manner, in case of a device setting up each carburetor in a concentrated part of t...
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