26 results about "Diesel engine" patented technology

An engine controller determines the cost of operating a combustion engine and the cost of operating an emissions after-treatment device. Accordingly, the engine controller adjusts parameters for operation of the engine and the after-treatment device to ensure cost-effective use of the engine and the after-treatment device while complying with exhaust emissions requirements. In particular, the engine controller receives the price of fuel consumed by the engine and the price of reductant used by the after-treatment device to determine the respective cost of operation. Specifically, the fuel is diesel fuel used in a diesel engine; the reductant is urea use in a urea-based Selective Catalytic Reduction (SCR) system; and the regulated exhaust emissions is nitrogen oxide (NOx) emissions. The engine operating parameters may include cooled exhaust gas recirculation airflow, fuel injection timing, fuel injection pressure, and air-to-fuel ratio. The SCR system operating parameters may include the volume of urea injected.

The invention discloses a non-road diesel engine combustor DPF regeneration temperature control method. According to the method, control over the regeneration temperature of a non-road diesel engine combustor DPF is completed by combining feedforward control and PID feedback control. The method has the advantages that closed-loop control is stable and feedforward control is fast. The control precision of the regeneration temperature of a DPF catalytic converter is improved. Under various diesel engine working conditions, the error of the actual temperature of an inlet of the DPF catalytic converter and the DPF target regeneration temperature can be controlled within 25 DEG C. Accordingly, a DPF system can conduct reliable regeneration temperature management under various working conditions.

The present invention provides a method and a device for temperature management of an exhaust purification equipment. The invention relates to a method for temperature management in an exhaust channel of an internal combustion engine, wherein at least one thermoelectric generator is equipped in the exhaust channel or the exhaust purification equipment. The operation mode of the thermoelectric generator comprises: in temperature management of the exhaust purification equipment, when exhaust flow in the exhaust channel or for controlling the exhaust purification equipment, an achievable heating or cooling capacity of the thermoelectric generator and cooling capacity of additional components for cooling the thermoelectric generator are considered. The invention also relates to a device for temperature management of exhaust purification equipment in an exhaust channel of the internal combustion engine. Through totally including cooling or heating capability of the thermoelectric generator in the operation mode of the exhaust purification equipment, the efficiency of the exhaust purification equipment is improved, temperature management is improved and fuel consumption is reduced. The method and the device can be particularly used in an Otto engine or a diesel engine advantageously.

Embodiments of the invention provide a shunting locomotive control method and a shunting locomotive. The method comprises the following steps: acquiring the working state of the shunting locomotive, wherein the working state is specifically one selected from a group consisting of a waiting-for-working state, a light locomotive running state and a shunting state; if the working state is the waiting-for-working state or the light locomotive running state, controlling the shunting locomotive to enter the mode of power supply via a power battery, wherein in the mode of power supply via the power battery, the power battery supplies power to the shunting locomotive; and if the working state is the shunting state, controlling the shunting locomotive to enter the mode of power supply via a dieselengine, wherein in the mode of power supply via the diesel engine, the diesel engine supplies power to the shunting locomotive. Therefore, the method overcomes the problem of large current supply lossof the diesel engine when the shunting locomotive is in the waiting-for-working state and the light locomotive running state, solves the problem that the power battery has large capacity and large size, and reduces requirements on the diesel engine.

The invention discloses a diesel engine overall test process management system, which uses a browser/server (B/S) structure, and comprises a front desk function menu module dynamically configured, a rear desk function menu module, a rear desk server module and a system management module, wherein the front desk function menu module can access through a browser, the rear desk function menu module is arranged on a server, and the rear desk server module and the system management module are operated after various roles of personnel register according to authority given by authority managers. A diesel engine overall test process management platform builds a management process of diesel engine overall test projects preliminarily, achieves standardized management of a diesel engine overall test project process, achieves whole data management of the diesel engine overall test project process, is used to look up history data of test projects, and supplies help for development of diesel engine overall test works.

The invention discloses a cylinder block of a diesel engine. The cylinder block comprises a body and a plurality of cylinder holes, the multiple cylinder holes are directly machined and molded in the body, cooling water sleeves are arranged on the peripheries of the cylinder holes, and two water ways which are formed in a machining manner and extend from the top face of the body downwards are formed between every two adjacent cylinder holes, wherein the two corresponding water ways are intersected, and the lower ends of the two corresponding water ways are communicated with the cooling water sleeves of the corresponding cylinder holes. According to the cylinder block, the cylinder holes and the body are integrated together, the part between every two cylinder holes is cast into a solid, the water ways are formed in the machining manner, the cylinder center distance is decreased, the length, the weight and the cost of the cylinder block are reduced, distribution of the diesel engine is more compact, and the reliability of the cylinder block is improved.

The invention discloses a production process of an environment-friendly water-based anti-corrosion coating. The production process comprises the following steps: adding deionized water and an SN-5027 water-resistant dispersant into a paint preparation tank, fully and uniformly stirring, further putting attapulgite, iron oxide red powder, aluminum tripolyphosphate, mica powder, an AMP-95 additive, a defoaming agent and the like into the paint preparation tank, uniformly stirring, then grinding by a sand mill to the fineness of not more than 30mu m, further adding a self-crosslinked and modified styrene-acrylate emulsion, a mildew-proof and anti-bacterial agent and other additives into the paint preparation tank, fully and uniformly stirring, regulating viscosity with the deionized water till the coating is qualified, filtering and packaging. The produced coating has the characteristics of high drying speed, great anti-rust and anti-corrosion properties, and excellent heat resistance, resistance to brine and resistance to a nitrocellulose coating, thereby meeting the requirements on a dip coating line of a cast iron housing of a diesel engine that emulsification-resistant cutting fluid, 30# mechanical oil and a hot washing solution at 90 DEG C have no sticking, decoloring and blistering and other quality indexes during soaking and rinsing.

The invention discloses a heat-exchange cooling box for decks. The heat-exchange cooling box comprises a cooling box body, wherein a heat exchanging inlet pipeline and a heat exchanging outlet pipeline are mounted on the cooling box body, the upper top surface and the lower bottom surface of the cooling box body are closed, the heat exchanging inlet pipeline is mounted on the lower bottom surface of the cooling box body, the heat exchanging outlet pipeline is mounted on a side wall board of the cooling box body and is close to the upper top surface. Most exhaust pipelines of an engineering ship convenient to detach are exposed on a deck and penetrate through the deck, high-temperature transmission causes too high temperature of the deck, and as a result, inconvenience is brought for the working staff to walk on the deck to carry out normal routing inspection. The heat-exchange cooling box disclosed by the invention is mounted on a deck cover, heat is exchanged through water circulation, a power system of a ship, namely an external circulatory system of cooling water of a main diesel engine, is utilized, the configuration of circulating pumps is reduced, the operating cost is reduced, the temperature of the deck can be effectively lowered, the structure is simple, and the heat exchanging performance is good.

The invention relates to a tea garden rotary cultivator, comprising a frame, a power device, a rotary blade, and a walking wheel, wherein a fixed mount is arranged below the frame, the walking wheel is arranged below the frame and in front of the rotary blade, a depth limiting rod is arranged behind the rotary blade and below the frame, the upper and lower positions of the depth limiting rod on a locating sleeve are adjustable, and an arc plate is arranged below the depth limiting rod; and the power device comprises a diesel engine and a speed reducer, the rotary blade is provided with a driven disc which is connected with a driving disc on the speed reducer through a transmission chain A, and the driven disc is connected with a driving disc on the walking wheel through a transmission chain B. The tea garden rotary cultivator provided by the invention is suitable for loosening soil and plowing in a tea garden, the diesel engine provides power to ensure that the walking wheel and the rotary blade are driven to rotate so as to achieve walking and plowing of the rotary cultivator, wherein by adjusting the upper and lower positions of the depth limiting rod, the depth of soil tillage is controlled, manpower is saved, and the efficiency of plowing and loosening the soil is increased.

The invention discloses an assembling device of a marine diesel engine rack open tube welding base, and belongs to the technical field of assembling equipment. The assembling device of the marine diesel engine rack open tube welding base comprises square tubes (101), at least two positioning plates (102) arranged on the square tubes (101), and at least two positioning bolts (103) arranged on the square tubes (101). Compared with the prior art, the assembling device has the characteristics of being simple in structure, reliable in performance, high in cost performance and the like.

A retaining clip fits on the exhaust rocker arms of a large diesel engine to hold the exhaust brake power pistons in place while performing service on the engine. The retaining clips are easily installed and removed from the rocker arm and prevent the loss or damage of the power piston due to the piston accidentally falling out of the rocker arms during service to the engine.

The invention discloses a diesel-engine-driven self-priming pump and a control protection method, and belongs to the technical field of self-priming pumps. The problem that an existing traditional gasoline or diesel engine driven water pump lacks the protection measure is solved. A diesel engine, a vacuum suction device and a centrifugal pump are sequentially arranged on a base, a flywheel of thediesel engine is connected with one end of a transmission shaft of the vacuum suction device through a clutch, a thrust device is arranged on the clutch, the thrust device is used for driving the clutch, the other end of the transmission shaft of the vacuum suction device is connected with a pump shaft of the centrifugal pump, the centrifugal pump communicates with a water source through a pump inlet pipeline, a pressure chamber body is arranged on the vacuum suction device, and communicates with a suction chamber body through an air guide pipe, the suction chamber body communicates with the pump inlet pipeline, and an electric control cabinet is electrically connected with the diesel engine, the thrust device and the vacuum suction device. According to the diesel-engine-driven self-priming pump and the control protection method, the self-priming pump state can be automatically monitored, and the failure to the self-priming pump due to high temperature or low temperature can be avoided.

The invention discloses a diesel engine oil tank oil outlet structure. The diesel engine oil tank oil outlet structure comprises an oil tank; the upper end of the oil tank is provided with an oil feeding pipe communicating with the upper end of the oil tank, and the front side of the oil tank is provided with an oil discharging pipe communicating with the front side of the oil tank; a filtering box is arranged on the front side of the oil tank in an inserted mode; the oil discharging pipe is inserted into the filtering box and communicates with the filtering box; the upper side of the filtering box is provided with a fixed rod fixedly connected with the upper side of the filtering box; the fixed rod is provided with a connection plate, and the two ends of the connection plate are symmetrically provided with transmission rods; the front side of the oil tank is symmetrically provided with first racks slidably connected with the front side of the oil tank; and the upper sides of the firstracks are symmetrically provided with second fixed blocks fixedly connected with the first racks. The diesel engine oil tank oil outlet structure has the advantages that by arranging a filtering device on the oil discharging outlet of the diesel engine oil tank, diesel oil is filtered by the filtering device and then flows out when flowing out, impurities in the diesel oil entering a diesel engine are decreased, the diesel engine blockage situation is prevented, and accordingly, the service life of the diesel engine is prolonged.

The invention discloses a diesel engine roller tappet. The diesel engine roller tappet comprises a machine body and a bush, wherein a tappet body is arranged in the machine body; a thrust block is arranged on the tappet body; the upper end of the thrust block abuts against a push rod; the thrust block is in interference fit with the tappet body; a roller is arranged on the outer side face of the bush; a rotating mechanism composed of the roller and the bush is fixedly connected with the tappet body through a positioning shaft; and one side of the positioning shaft is fixedly connected with thetappet body through a positioning screw. Vertical through holes are adopted in a first oil way and a second oil way of the diesel engine roller tappet, machining is simple, and the production cost issaved; a rectangular positioning boss at one end of the positioning shaft effectively prevents the tappet body from rotating in the working process, positioning is simple, and use is reliable; and the positioning shaft is positioned on the tappet body through the positioning screw, positioning is accurate and reliable, and the assembling accuracy is improved.

The invention discloses an antifreeze and fuel-saving air-cooling device for a multi-cylinder diesel engine, which comprises an air-cooling pipe, an outer surface of one side of the air-cooling pipe is provided with a heat-insulating panel, and the air-cooling pipe penetrates through the heat-insulating panel. Inside, and closely fit with the heat insulation panel, one end of the heat insulation panel is provided with a switch button, one end of the switch button is embedded in the inside of the heat insulation panel, and the bottom of the heat insulation panel is respectively set There are a fixed nut and a fixed shaft, the fixed shaft runs through the inside of the fixed nut, and is fixedly connected with the heat insulation panel through the fixed nut. The function, and occupy a small space, and low price, has broad market prospects and application prospects.

The invention discloses a self-locking lifting tool for an injection pump of a diesel engine. The lifting tool comprises a fixed plate and a lifting rod mounted on the fixed plate, wherein a lifting lug and a positioning pin are respectively arranged on two positions, at two sides of the fixed plate, of the lifting rod, and the positioning pin and a spacer pin are arranged on a same side; a squarehole is formed in one end of the fixed plate, and correspondingly, a square flat position matched with the square hole is formed in the lifting rod; a mounting hole for mounting the spacer pin is also formed in the other end of the fixed plate; and the connecting line of axes of the square hole and the mounting hole is connected to any one side of the square hole in an oblique crossing manner. The self-locking lifting tool for the injection pump of the diesel engine provided by the invention is compact in structure and reasonable in design. An injection pump can be lifted by means of a craneassisted by the lifting tool, so that the labor intensity is reduced greatly, the production efficiency is improved, and the production safety is ensured.

The invention discloses an engine emergency stop device and an emergency stop function test method. The device comprises a compression air supply unit, an air supply pipeline and a stop air cylinder which are connected in sequence, and an electric control valve is arranged on the air supply pipeline. A first pressure sensor is arranged at the end, close to the compression air supply unit, of the air supply pipeline, and a second pressure sensor is arranged on the intersection pipe section close to the stop air cylinder. The electric control valve, the first pressure sensor and the second pressure sensor are electrically connected with a control unit. The method comprises the steps that an operator triggers a starting signal; once it is judged that the current air supply pressure is withina first set threshold value, the operator is prompted to select whether to carry out an emergency stop function test or not; when the operator selects to carry out the test, the electric control valveis controlled to connect the air supply pipeline; and starting is carried out once it is judged that the current air pressure of the stop air cylinder is within a second set threshold value. According to the device and the method, normal emergency stop of a diesel engine can be ensured during each starting, and the accident that the diesel engine is damaged due to the fact that emergency stop cannot be achieved in emergency is avoided.