33results about How to "Enhanced power output performance" patented technology

The invention discloses a comprehensive energy recycling system based on a liquefied natural gas automobile. An engine coolant is used as a heat source and LNG (Liquefied Natural Gas) is used as a cold source to drive a power circulator to output power; at the same time high temperature engine tail gas is used as the heat source and the environment is used as the cold source to drive another power circulator to output power; the cooling capacity of a part of the LNG in a higher temperature area is used for counteracting one part of automobile air-conditioner load so as to reduce the engine power consumption consumed for making the cooling capacity, so that due to the comprehensive energy recycling and utilization in such three aspects, the power output capability and energy utilization efficiency of an LNG automobile engine are improved, the brake ratio fuel consumption rate is reduced, and as a result, the comprehensive energy recycling system has the potential to create remarkable economic and social benefits.

The invention discloses an oil film compensation method used in fuel oil injection. The method comprises the following steps: collecting air inflow signal and crankshaft rotating speed signal; confirming basic injecting time (TIB) of an engine according to the crankshaft rotating speed signal and the air inflow signal; judging that the engine is in sharp accelerating state or sharp decelerating state according to the TIB; inquiring a marking data table of the engine to obtain fast compensation amount and slow compensation amount of an intake manifold of the engine according to the state of the engine; and acquiring the oil film compensation value in the engine oil injection process according to the fast compensation amount and slow compensation amount of the intake manifold of the engine. The method can accurately compensate the oil injection amount by precisely calculating the oil film compensation value in fuel oil injection, thus greatly improving the power output performance in acceleration and deceleration, obtaining the optimal air-fuel ratio of an automobile in accelerating or decelerating working condition, and adjusting the running performance of the automobile by changing oil injection sum.

The invention discloses a tractor, and relates to the technical field of agricultural machine manufacture. The tractor comprises an engine, wherein an output shaft of the engine is connected with a power distributing box between a front drive axle and a rear drive axle, a first output shaft of the power distributing box is connected with a first hydraulic pump, an output opening of the first hydraulic pump is communicated with an oil inlet of a first hydraulic motor through oil pipes and a first solenoid valve set, and the first hydraulic motor is connected with gear drive boxes which are mounted at both ends of an agricultural machine tool input shaft; a second output shaft of the power distributing box is connected with a second hydraulic pump, and an output opening of the second hydraulic pump is communicated with an oil inlet of a lifting cylinder of an agricultural machine tool hanging device through oil pipes and a second solenoid valve set; and a third output shaft of the power distributing box is connected with an input shaft of the front drive axle and an input shaft of the rear drive axle through a gearbox. Compared with the prior art, the tractor disclosed by the invention can solve the problems of poor power output performance and low production and operation efficiency in ploughing of the conventional tractor.

The invention discloses an engine block set used for an engine, and the engine with the engine block set. The engine block set comprises a cylinder cover and a cylinder body. The inner wall faces of the cylinder walls of cylinders are cylindrical wall faces. The cross sections of the cylinder walls are annular. Four arc-shaped sections which are sequentially connected are arranged on each annular cross section in the circumferential direction. Each arc-shaped section is further divided into a first section, a second section and a third section. The central angle corresponding to each first section is alpha1. The wall thickness of each first section is h1. The central angle corresponding to each second section is alpha2. The wall thickness of each second section is h2. The central angle corresponding to each third section is alpha3. The wall thickness of each third section is h3. The third section of each arc-shaped section is the farthest from the longitudinal central line of the engine. The first section of each arc-shaped section is the closest to the longitudinal central line. The alpha1, the alpha2 and the alpha 3 meet the relation that the sum of the alpha1, the alpha2 and the alpha 3 is equal to 90 degrees. The h1, the h2 and the h3 meet the relation that the h1 is smaller the h2 and the h2 is smaller than or equal to the h3 or meet the relation that the h1 is smaller than or equal to the h2 and the h2 is smaller than the h3. The engine block set has the beneficial effects that the weight is light, the size is small, and the deformation problem of the cylinders can be effectively solved.

A sealed electron beam source (12) for an imaging tube (16) is provided. The beam source (12) includes a source housing (50) with a source window (54) having a first voltage potential and a source electrode (52) having a second voltage potential. The source electrode (52) generates electrons and emits the electrons through the source window (54) to a target (32) that is external to the source housing (50). A method of supplying and directing electrons on the target (32) within the imaging tube (16) is also provided. The method includes forming the source housing (50) over the source electrode (52) and sealing the source housing (50). The electrons are generated and emitted from the source electrode (52) and directed through the source window (54) to the target (32).

The invention relates to a power machine technology, belongs to wind power output equipment, and particularly discloses an airflow-impact-accelerated rotational kinetic energy output and power generator drive device. Wind power blades annularly and uniformly distributed around the central axis parallel to a straight line, where a bearing shaft is located, of the bearing shaft are installed on the bearing shaft; the wind power blades are in transmission connection with the bearing shaft in a manner of revolution; an intake port penetrating through the wall body of a shell wall at the head end of a shell in the outer thickness direction of the shell, communicating with the inner chamber of the shell, and extending in the radial direction of the inner chamber of the shell in the shape of a straight-line segment, is formed in the shell wall, and an exhaust port penetrating through the wall body of the shell wall at the tail end of the shell in the outer thickness direction of the shell is formed in the shell wall; and a tail-end barrel port formed in the tail end of an airflow guide-in acceleration barrel communicates with the intake port, and the inner barrel diameter of the cross section perpendicular to the own length direction of the airflow guide-in acceleration barrel is correspondingly and continuously reduced towards the length direction of the airflow guide-in acceleration barrel from a head-end barrel port to the tail-end barrel port. The airflow-impact-accelerated rotational kinetic energy output and power generator drive device disclosed by the invention is more complete in structure, obviously increases power output efficiency, and further adequately extracts air kinetic energy contained in wind power.

The invention discloses a motorcycle intake and exhaust control system and a motorcycle. The motorcycle intake and exhaust control system comprises an intake mechanism, an engine and an exhaust mechanism which are sequentially connected. The air intake mechanism comprises an air filter, the exhaust mechanism comprises a first exhaust pipe and a conversion exhaust assembly, the air filter, the engine, the first exhaust pipe and the conversion exhaust assembly are sequentially connected, the length of the first exhaust pipe is 250-480 mm, and the effect of reducing the emission amount of the motorcycle is achieved. In addition, a partition plate in the air filter inclines towards the rear of the motorcycle and forms an included angle alpha with the vertical plane where the center line of the motorcycle is located, a filter element inclines towards the rear of the motorcycle and forms an included angle beta with the partition plate, and the included angle between the filter element and the vertical plane where the center line of the motorcycle is located is the sum of alpha and beta, so that the air intake efficiency of the air filter is sequentially improved, and the performance of the engine is improved to make up for the performance damage influence of an exhaust mechanism on the engine. The air filter can be detached from the side of the motorcycle.

The invention discloses a variable weight superposition type overmodulation method for an electric vehicle motor controller and belongs to the technical field of modulation. The method comprises the following steps of: calculating to obtain a modulation coefficient by adopting a magnetic field orientation method; obtaining an initial value of a superposition weight factor; according to a target voltage vector, calculating to obtain a phase angle of the target voltage vector in a static coordinate system; carrying out optimization calculation to obtain a superposition weight factor optimization value; according to the phase angle of the target voltage vector under the static coordinate system, calculating to obtain a weighted component used for superposition, and obtain a reference voltage vector; and according to the reference voltage vector and a space vector pulse width modulation method, calculating to obtain a switching control signal of an inverter. According to the method, the superposition weight factor is optimized and calculated according to the phase angle of the target voltage vector, so that the phase current harmonic distortion rate of a motor and the torque ripple of a driving system are effectively reduced, and the power output performance of an electric vehicle and the comfort of a driver and passengers are improved.

The invention discloses an unloading device applied to a fork loading machine. The unloading device comprises a lifting seat, a fork portion, a holding drive mechanism, a holding mechanism, a center seat, a rotary drive mechanism, a drive gear, a rotary bearing and a front mounting plate; the holding drive mechanism is in transmission connection with the holding mechanism so as to drive the holding mechanism to move between the holding position and the holding loosening position relative to the fork portion, and the holding mechanism located at the holding position is matched with the fork portion and holds a loading box; the rotary bearing comprises an inner ring and an outer ring which can be rotatably sleeved; the outer ring is fixedly connected with the lifting seat, the inner ring is provided with an inner gear, the drive gear is engaged with the inner gear, the front mounting plate is rotatably arranged outside the center seat in a sleeving manner and fixedly connected with the inner ring, and the fork portion and the front mounting plate are fixedly connected; and the unloading device has the following beneficial effects of being convenient and rapid in unloading, and high in anti-side-turning capacity and power output capacity.

An intake/outlet pipe optimization method for a rotary engine, comprising the steps of: (A) providing a rotary engine; (B) providing a simulation software package, to perform a series of simulations for the rotary engine according to different combinations of a pipe length, a pipe diameter, a pipe shape and a pipe angle, to determine an optimal combination of the pipe length, the pipe diameter, the pipe shape, and pipe angle, to obtain an optimal power output for the rotary engine; and (C) performing tests for the rotary engine, by utilizing the optimal combination of the pipe length, the pipe diameter, the pipe shape, and pipe angle obtained in step (B), to obtain a test optimized power output for the rotary engine.