46results about How to "Stable idle" patented technology

To permit easy and adequate setting of a gain in an internal combustion engine (hereinafter be called an “engine”) for the surer stabilization of an idle speed, the present invention provides a device for controlling an air volume during an idle operation of the engine. This device is provided with a first estimation unit for estimating a current output torque correlation value corresponding to a present intake-air volume of the engine; a second estimation unit for estimating an output torque correlation value correction amount corresponding to a difference between a current engine speed and a target engine speed of the engine; a third estimation unit for estimating a target output torque correlation value based on the correlation value and the correction amount; and a control unit for controlling an intake-air-volume adjusting system of the engine to achieve an intake-air volume which is equivalent to the target output torque correlation value.

A method for adjusting a lookup table that includes preset on-time values for an injector of an engine linked to fuel injection quantity values (δ). The following steps are executed in a situation when the output shaft of the engine is disconnected from the output shaft of the gearbox. A torque loss value (Tloss) and a combustion efficiency value (εF) are determined or received. An actual fuel injection quantity value (δactual) is calculated, based on the torque loss value and the combustion efficiency value. An on-time value (tg) linked to the actual fuel injection quantity value is determined from the lookup table and the on-time value is compared with a presently applied on-time value (tb) that is established by an engine control with the aid of a regulator and the lookup table. The lookup table is adjusted based on the result of the comparison.

The invention relates to energy-saving and wear-resistant lubricating oil. The energy-saving and wear-resistant lubricating oil comprises benzotriazole, triphenyl phosphate, polybutadiene, chlorinated paraffin, dibutyl phthalate and secondary oil. The energy-saving and wear-resistant lubricating oil is used with conventional lubricant at the same time, the adding amount of the energy-saving and wear-resistant lubricating oil is 3-5% of the sum of the energy-saving and wear-resistant lubricating oil and the conventional lubricant, and the energy-saving and wear-resistant lubricating oil is suitable for liquid lubricating oil, which does not include braking oil, with motion interface being lower than 320 DEG C. The energy-saving and wear-resistant lubricating oil has the advantages that the energy-saving and wear-resistant lubricating oil applied to a car can evidently improve the working state of an engine, and idling stability, noise lowering, acceleration sensitivity and power enhancing of the engine are achieved; the engine is good in low-temperature starting performance especially in winter; fuel can be combusted completely, tail gas is improved, and environment protection is achieved; energy consumption is lowered by 10-38%; the abrasion of the engine and a power transmission part is low, and the service life of the engine and the power transmission part can be prolonged by 50% to 2 times; when the lubricating oil is applied to other fields, machinery service life can be prolonged by 1-2 times.

The invention relates to a gasoline detergent additive which adopts the following technical scheme that a boracium-titanium molecular sieve catalyst is prepared in an industrial scale, and epoxidized polyisobutene with high yield is prepared by using a boracium-titanium molecular sieve as a catalyst and peroxide as an oxidizing agent; the epoxidized polyisobutene is used as a raw material, and under the action of the catalyst, a main additive of the gasoline detergent additive is prepared by direct aminolysis under low pressure; and auxiliary materials of an ashless dispersant, base oil, an antioxidant, a polymerization inhibitor, an antirusting agent, an emulsion splitter, and the like are added in a material mixing kettle according to a certain proportion and heated and uniformly stirred. The gasoline detergent additive can effectively clear the descendent deposit carbon of an engine nozzle and an air inlet valve, improve the lubricating performance of fuels, prevent the wear of the air inlet valve, prolong the service life of an engine and reduce the maintenance cost.

The invention discloses an energy-efficient and environment-friendly vehicle comprehensive maintaining agent and a preparation method thereof. The maintaining agent comprises the following components in percentage by weight: 20 to 60 percent of polyisobutene, 1 to 5 percent of 1,1,1-trichloropropane, 1 to 3 percent of dibromoethane, 0.5 to 5 percent of organic rare earth salt, 0 to 57 percent of aviation kerosene, 0 to 4 percent of organic manganate and 0.5 to 2 percent of surfactant. In the invention, the preparation process is simple, the obtained maintaining agent can be used in both gasoline and diesel with 15 to 27 percent of fuel oil reduced and over 50 percent of tail gas reduced, and the maintaining agent also has functions of maintaining and repairing oil tanks, oil paths, oil nozzle, air valves, combustion chambers and ternary catalyst systems of vehicles, increases the power of the vehicles, makes the idle speed smooth and the acceleration flexible and powerful and greatly reduces tail gas discharge.

The present disclosure relates to an idle power generation method, device and vehicle of a hybrid vehicle. The method includes: when the hybrid vehicle is in the idling power generation state, acquiring the temperature of the power battery of the hybrid vehicle; determining the target torque of the belt drive starter generator BSG of the hybrid vehicle according to the temperature of the power battery; determining the initial torque of the BSG One or more intermediate torques between the torque and the target torque; determine the intake air volume increment of the engine according to the intermediate torque closest to the initial torque; determine the fuel injection volume of the engine according to the determined intake air volume increment; control The engine runs with the determined fuel injection quantity; the air intake quantity increment of the engine is determined according to an intermediate torque closest to the current torque of the BSG until the torque of the BSG reaches the target torque. In this way, when the hybrid vehicle is generating electricity at idle speed, the engine speed fluctuation can be reduced, thereby reducing engine vibration and stabilizing the engine idle speed.

The present invention involves the additive for liquefied petroleum gas for automobiles. It is composed of raw materials with the following weight ratio: at least one oxygen-containing organic solvent 40-60; at least one polymer 5-15; at least one oxygen-containing contentNon-ion surfactants 40-60; at least one antioxidant 5-15.The above-mentioned oxygen-containing organic solvents are selected from nomatum (ethyl) alcohol, MTBE, or di methalin;The antioxidants are selected from 2,2-sub-basis bisphenols or styrerized phenol, etc.;Dilately, such as dilate,; this additive can prevent car nozzles, valve coke, and the valve flap bonding of the valve of the combustion system solenoid valve and gasification evaporator.The Qingjiao was extended from December to more than 6 months; the average of the oil-based Jeta car saved 2-3 liters of fuel 100 kilometers.

The invention discloses an engine gas inlet system of an automobile. The engine gas inlet system of the automobile comprises an upper shell, a lower shell, a filtering element and a first air inlet pipe for conveying gas to the filtering element, and further comprises a vacuum box cover plate, a first connecting pipe, a second connecting pipe, a third connecting pipe, a vacuum motor, a vacuum electromagnetic valve, an air inlet baffle and a second air inlet pipe used for conveying gas to the filtering element. The upper shell and the vacuum box cover plate form a vacuum box, and the vacuum box is connected with an engine air inlet manifold and the vacuum electromagnetic valve through the first connecting pipe and the second connecting pipe. The air inlet baffle is located in the second air inlet pipe. The vacuum motor comprises a motor cover plate, an electric membrane and a pull rod, the motor cover plate and the elastic membrane form vacuum space, and the vacuum space is communicated with the vacuum electromagnetic valve through the third connecting pipe. One end of the pull rod is fixedly connected to the outer side of the elastic membrane, and the other end of the pull rod is hinged to the air inlet baffle. According to the engine gas inlet system of the automobile, the inflating efficiency and the NVH performance of an engine can be easily improved. The invention further discloses the automobile comprising the engine air inlet system.

The invention discloses a method for controlling the engine idle speed of a hybrid electric vehicle, which comprises the steps of controlling the engine idle speed according to the following control process when the driver needs the engine idle speed in the hybrid power creeping mode: controlling the engine to perform torque control; controlling the drive motor The speed control is carried out, and the target speed of the drive motor is the idle speed. Among them, the creeping mode refers to that the vehicle can move at a certain speed when the driver does not step on the brake or step on the accelerator after the vehicle is started. The speed control precision of the driving motor of the invention is about 60% higher than that of the traditional engine speed control, and has the advantage of stable engine idle speed control.