123results about How to "Reduce combustion efficiency" patented technology

A method for a fuel delivery system coupled to an engine is disclosed, the fuel delivery system including a lower pressure pump (LPP) fluidly coupled upstream of a higher pressure pump (HPP). The method may include during operation of both the HPP and LPP, adjusting operation of the LPP in response to pressure fluctuations at an inlet of the HPP.

A spark plug comprising: a center electrode extending in a direction of an axis of said spark plug; a cylindrical insulator which has a shaft hole, and which holds said center electrode in said shaft hole in a state where a tip end of said center electrode is projected from a tip end face of said insulator; a metal shell which holds said insulator; and a ground electrode in which one end is joined to a tip end face of said metal shell, and which extends from said one end toward another end, wherein said ground electrode has an inner side face which faces said center electrode, and an outer side face which is a back face with respect to said inner side face, said outer side face is formed as an arcuately curved face when viewed from a side of said another end in an extending direction of said ground electrode, and a columnar noble metal tip is joined to said inner side face.

The problem during overrun fuel cut-off operations, i.e. cut-off of fuel injection during trailing throttle conditions of the vehicle, is that the transition entails an undue torque jump, resulting in the smooth operation of the engine and the driving comfort of the passengers of the vehicle being affected. The aim of the invention is to reduce the torque jump. Said aim is achieved by injecting fuel into a cylinder of the Otto engine in a multiple injection process, at least a partial quantity of the fuel that is to be injected being injected during the compression phase, whereby the quantity of air that is taken in advantageously decreases because no internal cooling takes place while the efficiency is advantageously reduced due to the lesser degree of swirling, resulting in lower torque. Overall, torque (DM) is reduced to a significantly greater extent than by merely adjusting the spark angle (ZW) while smooth operation of the Otto engine is not affected.

The invention discloses a heat-conduction oil furnace of a horizontal circulating fluidized bed, and relaters to combustion equipment of the circulating fluidized bed for inferior coal, solid wastes, urban and industrial sludge and biomass fuels, in particular to a heat-conduction oil heating device. The heat-conduction oil furnace is mainly composed of a feeding device, a main combustion chamber, an auxiliary combustion chamber, an after-combustion chamber and a cyclone separator, wherein heat-conduction oil coils are arranged in the main combustion chamber and the after-combustion chamber, an economizer and an air pre-heater can be arranged behind the cyclone separator, and a waste heat boiler can also be arranged behind the cyclone separator. The heat-conduction oil heating device adopts a horizontal circulating fluidized bed technology, changes the traditional structural style adopting a chain grate furnace to heat, changes the single-stage and vertical circulating structure of the traditional fluidized bed boiler, effectively reduces the height of the boiler, and reduces the requirement on the construction height of plants. Through reasonable structural layout, the problem that the circulating fluidized bed boiler is easily abraded is effectively solved, and the heat-conduction oil heating device has wide adaptability to fuels, has high combustion efficiency, and has lower pollutant discharging quantity.

A kind of hydrogen engine combustion control system and its control method are provided. The control of concentration of hydrogen-air mixture by throttle, distributive value, and EGR is divided into 3 steps (1) when an engine in idle or under 30% rated load, engine runs in a very low air/fuel ratio phi 0, the output power of the engine is controlled by throttle. (2) when in 30%-70% rated load, the concentration of mixture is adjusted from phi0 to 0.7. (3) when over 70% rated load, engine should run in equivalent air/fuel ratio, then output power is controlled by ERG.

Methods and systems are provided for regulating airflow through a charge air cooler integrated in an intake assembly. In one example, an engine intake assembly comprises a plenum having an integrated charge air cooler (CAC), a first header seal positioned around a circumference of a first CAC header, and a first rotatably movable seal positioned in a bypass passage of the plenum. The first movable seal interfaces via sliding contact with the first header seal and adjusting a position of the first movable seal may vary the amount of airflow through the bypass passage.

The invention belongs to the technical field of waste incineration and particularly discloses a pretreatment combination method of hazardous waste. The pretreatment combination method includes the steps of firstly, performing solid, liquid and semi-solid classification on the waste, and placing the classified waste into a storage; secondly, performing property detection on the hazardous waste which needs to be incinerated to determine the heat value, volatile component, halogen content, heavy metal content, combustibility, liquid viscosity and chemical reactivity; thirdly, performing compatibility analysis which includes theoretical analysis and experimental analysis on the waste of the storage; fourthly, performing combination calculation according to the heat value, volatile component, halogen content and heavy metal content, and guaranteeing heat value stability; fifthly, determining the combination quantity of different waste according to the calculation results in the fourth step,and mixing. The method has the advantages that the method is mainly used for hazardous waste combination, and the problem that potential safety hazards are easily caused by the incineration of different kinds of hazardous waste is solved.

A fuel delivery system is provided to reduce the pressure pulsations and noise vibration and harshness of direct injection systems. The fuel delivery system includes an elastic fuel line positioned between a first fuel pump and a second fuel pump and a check valve positioned in the elastic fuel line near the inlet of the high pressure pump, the check valve including an external housing having a peripheral surface with a greater diameter than an unstretched inner diameter of the elastic fuel line.

A control system for a vehicle including an engine, an electrical storage unit and a generator driven by the engine, the control system includes a socket and a controller. The socket is configured to supply electric power from the generator or the electrical storage unit to a device outside the vehicle in a travel stop state. The controller stops the engine when a preset condition is satisfied. The controller sets a first range and a second range in which the condition is satisfied. The first range is the range in a case where electric power is supplied to the device outside the vehicle and the second range is the range in another case. The first range is narrower than the second range.

An intake silencer device is described herein. The intake silencer device includes an outer housing and a plurality of sequential arranged expansion chambers separated by walls. The intake silencer device further includes an inner tube positioned in each of the sequential chambers, each of the inner tubes including an opening providing fluidic communication between an interior of the tube and the corresponding expansion chamber, a size of the openings increasing in size sequentially in a downstream direction.

The invention relates to a composite solid propellant based on aluminum powder coated with a nitramine oxidant and a preparation method. Dopamine surface-modified aluminum powder (Al@PDA) is coated with a nitramine oxidant (such as cyclotrimethylenetrinitramine, RDX) through a spraying drying technology to form compact core-shell-structured microspheres (Al@PDA@RDX) so as to replace RDX and Al intraditional propellant. Composite microspheres adopting interface interactions between the metal aluminum powder and the nitramine oxidant are adopted so that the oxidant and the aluminum powder in the propellant are in close contact, and can rapidly react when the propellant is combusted, and adverse influences of oxidant decomposition product diffusion and agglomeration of aluminum powder on propellant combustion can be suppressed. The preparation is simple and convenient, a spray granulation process, and industrialized production is liable to achieve. The composite solid propellant is simple in preparation method, and contents of components in a formula can be accurately controlled.

A method for operating an oil control valve coupled to a cam phaser configured to adjust a position of at least one cam between hard stops, the oil control valve included in an internal combustion engine having an intake valve and/or an exhaust valve controlled via the cam phaser. The method including operating the oil control valve responsive to cam position feedback information, the oil control valve adjusted in a first relationship based on the feedback information and operating the oil control valve in a cleaning mode during select combustion conditions by abruptly switching the oil control valve between two states responsive to the cam position feedback information. The oil control valve adjusted in a second relationship based on the feedback information, the second relationship including more abrupt adjustment than the first relationship.

The invention relates to the field of solid waste pyrolyzing devices, and discloses a Brown's gas-burning solid organic waste pyrolyzing furnace which comprises a housing and a cavity positioned inside the housing, wherein the housing is equipped with a main gas exhaust port, a pressure detector, an overpressure relief valve, an inductive ash-discharging electric valve and a feeding port; the cavity is equipped with smoke-guiding gas columns, a guiding chute, Brown's gas burning guns, wall-hanging crucibles, a heat conducting plate and a crucible basin; the wall-hanging crucibles and the crucible basin are filled with a metal material; and through an external fan of the Brown's gas-burning solid organic waste pyrolyzing furnace, part of burnable gas generated from the pyrolyzing process can flow back to the Brown's gas-burning solid organic waste pyrolyzing furnace. A kind of clean burning energy, namely Brown's gas, is utilized for the Brown's gas-burning solid organic waste pyrolyzing furnace; and the Brown's gas-burning solid organic waste pyrolyzing furnace has the advantages that the environment-friendly property is achieved, the cost is low, the occupied area is small, and solid organic waste can be efficiently, continuously and massively treated.

This invention is a high efficiency liquid fuel vaporizing combustion device. It includes air chamber, vaporizing chamber and combustion chamber. There is combustion barrel is arranged between air chamber and combustion chamber. Its superior edge extends along horizontal radial direction and forms a ring shaped flange. The lower part of flange connects to air chamber barrel body, the bottom of which connects to air pipe. The radial wall of combustion barrel is arranged with air hole. The center of combustion barrel bottom has vaporizing tank, the center of which is arranged with fuel conveying pipe and nozzle. The internal wall of vaporizing tank has division plate, on which has the communicating hole communicating to the vaporizing chamber. The radial wall of vaporizing tank has fuel releasing hole. There is supporting gasket between vaporizing tank and combustion barrel bottom. Heat transferring medium is arranged inside of vaporizing chamber. This invention is adequate for equipment coordination such as boiler, kitchen range and air conditioner.

The invention relates to a new cleaning agent for a gasoline system and belongs to the technical field of fuel additives. The cleaning agent for the gasoline system, which is provided by the invention, consists of a cleaning dispersant, a nano micro-explosion component, an antioxidation stabilizer, a preservative, an antifriction protective agent, a basic solvent and other components. The cleaning agent is treated by a microencapsulation process. The cleaning agent for the gasoline system can be used in gasoline engines to clean pollutants generated in combustion and deposits in oil paths and combustion chambers so as to save oil, protect environment and maintain automobiles.

The invention relates to the technical field of energy environmental engineering and provides a method for mixed burning of agriculture and forestry waste, sludge and household garbage by using a grate furnace. The method comprises burning the agriculture and forestry waste, sludge and household garbage in a grate garbage burning furnace, igniting by using agriculture and forestry waste, and adding household garbage and sludge in the furnace to realize mixed burning when the temperature of the furnace rises to 850 DEG C, wherein the mass percent of the agriculture and forestry in the mixed fuel is within 40 percent, the mass percent of sludge in the mixed fuel is within 30 percent, the burning temperature of the grate burning furnace is controlled at 850 to 1000 DEG C, and the smoke gas generated by burning stayed in the furnace is controlled above two seconds. The invention is low in the cost, improves the burning efficiency of the garbage burning furnace, solves the problem of pollution caused by the sludge, ensures that the agriculture and forestry waste can be recycled, reduces discharge of pollutants, particularly heavy metal and dioxin and reduces the consumption of fossil energy.