11results about How to "Improve emission effect" patented technology

The utility model provides an overhead valve guide air inlet type two-stroke engine which solves the problems that waste gas cannot be fully swept away due to the fact that a four-stroke working mode of a traditional overhead valve type engine is improved into a two-stroke working mode, and combustion efficiency and emission performance are poor. According to the technical scheme, the overhead valve guide air inlet type two-stroke engine comprises an engine body set and an air distribution mechanism provided with an overhead valve, an air guide pipe moving along with an air inlet valve rod through a support sleeve is arranged on the air inlet valve rod of the air distribution mechanism, the air guide pipe is close to the head of the air inlet valve, and a front end air outlet is reserved between the front end of the air guide pipe and the head of the air inlet valve. The rear port of the gas-guide tube communicates with the gas inlet channel; an air inlet cam of the air distribution mechanism is provided with an air inlet cam protruding part which pushes the front end of an air guide pipe of an air inlet valve to stretch into an inner cavity of the air cylinder body. By guiding and scavenging the inlet air, the engine can go deep into the cylinder body to purge the combusted waste gas, open the exhaust valve to work and fully sweep the waste gas, so that the scavenging efficiency is greatly improved, and the combustion efficiency and the emission performance are improved.

The invention relates to the technical field of vehicles, and provides an engine control device and a humidity measuring method. The method comprises the following steps: detecting the actual pump current of the wide-range front oxygen sensor in the current state; obtaining the theoretical pump current of the wide-area front oxygen sensor; comparing a current difference value Dip between the actual pump current and the theoretical pump current with a set threshold value, and if the current difference value is greater than the set threshold value, entering the next step; when the engine is in the humidity detection working condition, a natural gas injection quantity coefficient and a knock intensity indication coefficient are collected and are subtracted from corresponding preset standard values, and a knock difference value and a natural gas injection quantity difference value are obtained; calculating the relative humidity of the intake air of the engine; and by searching a preset conversion table of the relative humidity and the absolute humidity, obtaining the target humidity of the intake air of the engine. The technical problems that an intake oxygen sensor and an air mass flow sensor need to be additionally installed in traditional engine humidity measurement, the structure is complex, cost is high, and reliability is insufficient are solved.

The utility model relates to flat bottom material bin sliding frame mechanism technical field discloses a kind of flat bottom material bin sliding frame mechanism, including installation bottom plate, the upper side of installation bottom plate is fixedly connected with electric push rod, the side output end of electric push rod is fixedly connected with first transmission rod, the outside of first transmission rod is fixedly connected with first toothed plate, the outside of first toothed plate is connected with first gear wheel with tooth, the inside of first gear wheel is fixedly sleeved with first connecting rod, the outside of first connecting rod below is movably sleeved with installation sleeve.The utility model discloses a kind of flat bottom material bin sliding frame mechanism, by being set second transmission rod, two sliding frame assemblies can be driven to move reversely, further enhance the scattering and push effect of material, improve the discharge effect of material, reduce material accumulation, by being set spring, first impact block and second impact block can be shock-absorbed and buffered, reduce sliding frame abrasion, prolong equipment service life.

The utility model discloses a kind of oil-water separation filtering devices for numerical control machine tool, it is related to oil-water separation technical field.The utility model includes separation part, the separation part is for the oil-water separation of cooling liquid and waste water generated by numerical control machine tool;And oil discharge part, the oil discharge part is installed in the inside of separation part, the oil discharge part is for the oil dirt discharge generated by waste water surface layer.The utility model is by setting oil discharge part, specifically when oil dirt reaches the position on oil discharge pipe, it will flow from oil discharge pipe, to treat the oil dirt on the surface of waste water, in the process of discharging oil dirt, start electric heating tube on heating seat, to heat oil discharge pipe, make oil dirt in the inside of oil discharge pipe melt, to better discharge, reduce the situation of jamming, and when weather is colder, oil dirt agglomeration can also be prevented, and heat can be transferred to waste water made by baffle, can prevent the situation of agglomeration again.

The utility model provides a kind of engine guiding exhaust gas distribution mechanism, solved the problem that traditional overhead valve engine distribution mechanism is difficult to clean exhaust gas efficiently under two-stroke working mode, technical scheme is: including the overhead valve exhaust valve distribution assembly and intake valve distribution assembly being set on the engine combustion chamber cylinder head, exhaust valve rod has the gas guide pipe of being packaged with the movement of exhaust valve rod by support, gas guide pipe is close to exhaust valve head, and front end intake port is left between the front end of gas guide pipe and exhaust valve head, and gas guide pipe rear end port communicates exhaust passage.It is discharged exhaust gas by guiding exhaust, it can be applicable to two-stroke working engine, form independent lubricating system and crankshaft rotation complete once work, by guiding exhaust scavenging, improve combustion efficiency and emission performance, greatly improve the scavenging efficiency, and further improve engine working efficiency.

The utility model provides an engine guiding scavenging valve mechanism which solves the problem that a traditional overhead valve type engine valve mechanism is difficult to efficiently sweep waste gas in a two-stroke working mode. According to the technical scheme, the air inlet valve air distribution assembly of the engine guiding scavenging air distribution machine comprises an air inlet valve rod arranged in an air inlet channel, the rear portion of the air inlet valve rod is connected with an air inlet valve cam and an air inlet valve spring pushing air inlet valve opening and closing air inlet, and an air guide pipe moving along with the air inlet valve rod is arranged between the air inlet valve rod and the air inlet valve head through a support. A front-end air outlet is reserved between the front end of the air guide pipe and the head of the air inlet valve, and a rear port of the air guide pipe is communicated with the air inlet channel. Waste gas is exhausted by guiding and scavenging the inlet gas, the two-stroke-type engine exhaust pipe can be suitable for a two-stroke-type working engine, the combustion efficiency and the emission performance are improved by guiding and scavenging the inlet gas, the scavenging efficiency is greatly improved, and then the working efficiency of the engine is improved.

The utility model relates to waste liquid treatment technical field discloses neutralization buffer cabinet and marine engine, wherein the neutralization buffer cabinet, including: cabinet, the inside of cabinet is divided into first oil removal area and second oil removal area by partition, and the bottom of partition is equipped with the communicating port of intercommunication of first oil removal area and second oil removal area, first oil removal area interval is equipped with waste liquid inlet and oil outlet, and the oil outlet is installed in the upper of waste liquid inlet and is located the oil layer position of first oil removal area, and the bottom of first oil removal area is equipped with first aeration disc, second oil removal area interval is equipped with lye inlet and overflow port, and the bottom of second oil removal area is equipped with second aeration disc, the utility model discloses utilize the difference of oil -water density in first oil removal area, and the oil and oil residue that float up are discharged through oil outlet, realize oil liquid preliminary separation, in second oil removal area, and the oil grease in waste liquid happens saponification reaction by the lye that is passed in, further remove the oil grease in waste liquid, and the oil grease removal effect is better.

This invention discloses a method for monitoring the opening of a mechanical pressure relief valve in a high-pressure common rail system, comprising the following steps: Step 1, real-time monitoring of the actual rail pressure and the target rail pressure; Step 2, calculation of the gradient of the target rail pressure change; Step 3, determining whether to calculate the gradient of the actual rail pressure change based on the gradient of the target rail pressure change; if yes, proceed to Step 4; otherwise, return to Step 2; Step 4, calculating the gradient of the actual rail pressure change, and determining whether the pressure relief valve is open based on the gradient of the actual rail pressure change. This invention monitors the opening status of the pressure relief valve based on the gradients of the target rail pressure change and the actual rail pressure change, which can effectively improve the accuracy of monitoring the opening status of the pressure relief valve, thereby improving the operational reliability of the common rail system.

The utility model provides a kind of engine guiding scavenging intake valve, solve the problem that traditional overhead valve type engine intake valve is difficult to efficiently clean exhaust gas under two-stroke working mode to extend into engine combustion chamber, technical scheme is: the engine guiding scavenging intake valve body includes intake valve stem with intake valve head, technical key point is: intake valve stem has the gas guide pipe that is equipped with bracket and moves with intake valve stem, gas guide pipe is close to intake valve head, gas guide plate for guiding scavenging is set between gas guide pipe and intake valve head, gas guide outlet is set between gas guide pipe and gas guide plate.It can be applicable to two-stroke working engine, improve combustion efficiency and emission performance by air intake guiding scavenging, greatly improve the scavenging efficiency, and then improve engine working efficiency.

The utility model belongs to the technical field of heat exchange, and particularly discloses a flow guide assembly, a condensation heat exchange device and gas water heating equipment. The flow guide assembly comprises a mounting frame and flow guide plates, the mounting frame is of a rectangular frame structure, the flow guide plates are arranged on each side of the mounting frame and extend in the length direction of the corresponding edge of the mounting frame, and the flow guide plates incline towards the center direction of the mounting frame from bottom to top; and the included angle of the guide plate relative to the vertical direction can be adjusted. The condensation heat exchange device comprises a condensation shell with an atomization shell and the flow guide assembly, and the installation frame is installed at the upper end of the atomization shell. According to the utility model, the smoothness of water mist and flue gas emission can be improved, and the water mist and flue gas emission effect is improved.