342results about "Electrical automatic control" patented technology

The invention discloses a transmission driving control method of a bimodal integrated engine. The transmission driving control method comprises the following steps: S1, state sensing; s2, mode decision making; S3, dynamic adjustment; s4, mode switching; S5, power optimization distribution; s6, adaptive learning is carried out; and S7, fault-tolerant guarantee. The invention further discloses a bimodal integrated engine transmission system which comprises the following modules: a power input module; a transmission adjusting module; a state sensing module; an intelligent control module; and a fault-tolerant guarantee module. Parameters are dynamically adjusted through fuzzy PID control according to speed deviation, meanwhile, real-time correction is conducted in combination with a multi-mode intelligent algorithm, speed fluctuation is precisely controlled within + / -3 km / h, flight stability is guaranteed, a model prediction control and multi-mode intelligent control cooperation mechanism is adopted, an optimal power output sequence is calculated in advance, coordinated distribution is completed, and the optimal power output sequence is controlled to be within + / -3 km / h. The dynamic response speed is increased by 40%, and the high-dynamic task requirement is met.

The invention relates to the technical field of engine control, in particular to an engine combustion control method, device and system based on double oil sprayers and a computer program product. Comprising the steps that when an engine enters a lean-burn working condition and meets a self-learning condition, self-learning of the injection starting angle and the excess air coefficient of an auxiliary oil injector is conducted; ignition advance angle self-learning of the auxiliary fuel injector is carried out; and fuel injection control over the auxiliary fuel injector is conducted on the basis of the injection starting angle, the excess air coefficient and the ignition advance angle obtained through self-learning. And when refined fuel oil control is carried out to achieve the optimal fuel consumption of the engine, the lowest NOx emission requirement under the lean-burn working condition of the engine is met.

To provide a start control device capable of securing excellent startability even when ethanol concentration in fuel is high and an intake air temperature and a temperature of an internal combustion engine are low.SOLUTION: A start control device (30) applied to an internal combustion engine (E) driven by combustion of fuel containing ethanol includes: ethanol concentration determination means (31) for determining ethanol concentration in the fuel; and ignition timing change means (33) for changing ignition timing when starting the internal combustion engine (E) according to the ethanol concentration, wherein if the ethanol concentration determination means (31) determines that the ethanol concentration exceeds a threshold value when starting the internal combustion engine (E), the ignition timing change means (33) executes 360° ignition, which executes ignition every 360° of rotation of a crankshaft (3) of the internal combustion engine (E) until the internal combustion engine (E) starts.SELECTED DRAWING: Figure 3

The invention discloses an engine multi-vehicle-type adaptive NVH quality optimization method and system, and belongs to the technical field of automobile engine debugge.The method comprises the steps that after an engine is installed on a to-be-adapted vehicle, vehicle working condition data are collected in real time, the vehicle working condition data comprises a vehicle speed, an accelerator opening degree, an engine rotating speed, a gear, a hydraulic torque converter locking state and an engine oil temperature signal; the vehicle working condition data is compared with the working condition of the engine noise sensitive working condition, and whether the engine noise sensitive working condition is entered or not is recognized; when the engine has the noise sensitive working condition, an NVH control strategy embedded in an engine electronic control unit is activated; the NVH control strategy comprises adjustment of an engine ignition angle and oil injection parameters; the engine is controlled according to the ignition angle optimization control instruction and the oil injection parameter optimization instruction; and when the vehicle runs out of the working condition of the noise sensitive working condition of the engine or gear shifting is completed, the conventional combustion control logic is recovered. And the rising rate of the pressure in the cylinder is effectively reduced, so that the structural knocking noise within the range of 150-600Hz is inhibited.

The invention provides an engine control method and device, a computer readable storage medium and a vehicle. The method comprises the steps that under the condition that an engine is in an idling working condition, the opening degree of an exhaust gas recirculation valve of the engine and the opening degree of a throttle valve of the engine are adjusted to the corresponding preset opening degrees correspondingly; the idling working condition is the working condition of non-load operation of the engine; after the opening degree of the exhaust gas recirculation valve and the opening degree of the throttle valve are adjusted to the corresponding preset opening degrees correspondingly, the pressure of an intake manifold of the engine is obtained; under the condition that the pressure of the intake manifold is smaller than or equal to the pressure threshold value, the opening degree of the exhaust gas recirculation valve and the opening degree of the throttle valve are increased, so that the pressure of the intake manifold is larger than the pressure threshold value, and the problem that in the prior art, the engine oil consumption generated by pumping engine oil is high due to the fact that the pressure of the intake manifold is low under the engine idling working condition is solved.

To provide an engine control device suppressing progression of deterioration of a catalyst.SOLUTION: An engine control device includes: a reference temperature calculation part calculating a reference temperature of a catalyst; a delay angle amount calculation part calculating a delay angle amount of a requested ignition timing when a delay angle request is issued; a rise temperature calculation part calculating a rise temperature of the catalyst assumed when making the ignition timing delay angle with the calculated delay angle amount; a temperature calculation part for determining excessive temperature rise calculating excessive temperature rise of the catalyst used for determination whether or not the temperature of the catalyst excessively rises, on the basis of the reference temperature and the risen temperature; a prediction part predicting whether or not the temperature of the catalyst excessively rises on the basis of a temperature for determination of excessively risen temperature; an increase amount calculation part calculating an increase amount of fuel jetting for suppressing temperature rise of the catalyst due to delay angle of the ignition timing in the delay angle amount without depending on a clank angle just after delay angle request; and a control part executing fuel jetting with a fuel jetting amount reflecting the increase amount, and executing ignition to an air fuel mixture at the ignition timing reflecting the delay angle amount.SELECTED DRAWING: Figure 2

To make oil surely interpose between a rotor housing and a rotor even in cold starting.SOLUTION: An engine system 12 comprises: a rotary engine 14 having a rotor housing 16, side housings 18, and a rotor 20 that is housed in a rotor accommodation chamber surrounded by the rotor housing and the side housings and forms three working chambers 24, in which the rotary engine is driven by a starter generator 10 at the time of starting to increase in rotation speed, and drives the starter generator during operation; a water temperature sensor 64 for detecting a cooling water temperature of the rotary engine; and a PCM 84 and an SGCM 86, which are configured to control rotation speed of the starter generator at the time of engine starting. The PCM 84 and the SGCM 86 control the starter generator such that when the cooling water temperature at the time of rotary engine starting is relatively low, the rate of increase in engine rotation speed becomes low as compared with that when the cooling water temperature is relatively high.SELECTED DRAWING: Figure 7

The invention provides a two-stroke piston engine integrated controller with high-reliability position estimation, which is characterized in that a motor Hall signal acquisition function is added on the basis of an engine crankshaft position signal acquisition circuit of a conventional engine control module. A crankshaft position signal redundancy switching logic of the two-stroke piston engine is designed based on an improved circuit, a groove pole position behind a top dead center is positioned in the operation process of the engine, synchronous correction of a Hall signal and a crankshaft position signal is achieved, and a conversion relation between a motor Hall signal and the crankshaft position signal of the engine is established. When the crankshaft position signal is abnormal, the engine timing control method based on the motor Hall signal can be automatically switched. According to the invention, the redundancy switching of the position signal of the two-stroke piston engine can be realized, so that the piston engine can still complete a set task without flameout when the crankshaft position signal is abnormal, and the reliability of a control system is greatly improved.

An apparatus and method for operating an engine. The apparatus includes a crankshaft trigger wheel coupled to a crankshaft and a set of sensors equipped to generate a crankshaft signal associated with an instantaneous speed of the crankshaft trigger wheel. A controller is configured to receive the crankshaft signal corresponding to the instantaneous speed, determine a minimum instantaneous speed for the crankshaft trigger wheel to overcome a top dead center (TDC), and predict a reverse rotation event for the engine when the instantaneous speed falls below the minimum instantaneous speed. After making the prediction, ignition of the engine is prevented prior to the reverse rotation event occurring.

To make three of generation of negative pressure for a brake booster, ignition timing retard for warming up a catalyst, and securing of torque for maintaining idle operation coexist to the maximum.SOLUTION: An engine required torque to be generated for maintaining an idle operation is calculated (S1), a net target air amount required for the engine required torque is calculated when an ignition timing is MBT (S2), a required ignition timing retard amount required for warming up a three way catalytic converter is determined (S3), a retard target air amount required for realizing the engine required torque under an ignition timing according to the required ignition timing retard amount is calculated (S4, S5), and an upper limit differential pressure securing target air amount required for securing a negative pressure is calculated (S6). The retard target air amount and the differential pressure securing target air amount are compared with each other (S7), and when the retard target air amount is equal to or less than the differential pressure securing target air amount, the throttle valve is controlled according to the retard target air amount, and the ignition timing retard according to the required ignition timing retard amount is performed (S8 to 10).SELECTED DRAWING: Figure 2

The present invention discloses a control method, device, equipment and medium for a natural gas engine. The method comprises: obtaining operating parameters of the engine, and determining an optimal range of an intercooler temperature of the engine according to the operating conditions corresponding to the operating parameters; adjusting the intercooler temperature of the engine to an intercooler temperature lower limit value corresponding to the optimal range of the intercooler temperature by controlling the rotation speed of a fan when no detonation occurs in the engine; adjusting the ignition angle and the EGR rate of the engine to a first ignition angle and a first EGR rate, respectively, based on a first preset curve and the lower limit value of the intercooler temperature, and controlling the engine to operate at the first ignition angle and the first EGR rate so that the engine operates with minimum gas consumption, and returning to the step of obtaining the operating parameters of the engine; in such operation, the combustion efficiency of the engine can be improved, and the economy is good.

Provided is an engine control device that suppresses the occurrence of a torque shock at the time of resuming from a fuel cut and suppresses deterioration of a combustion state. A control device for an engine mounted on a vehicle, the control device being provided with: an acquisition unit that acquires an engine speed and atmospheric pressure when there is a request to restore from a fuel cut; a recovery control unit that delays the ignition timing at the time of recovering from the fuel cut from the MBT ignition timing by a predetermined retardation amount and executes a recovery process for recovering from the fuel cut; and a retardation amount control unit that reduces the retardation amount as the engine rotation speed is higher, and increases the retardation amount as the atmospheric pressure is lower. The retardation amount control unit increases a reduction rate, which is a reduction amount of the retardation amount with respect to an increase in the engine rotation speed, as the atmospheric pressure is lower.

The invention discloses an ignition angle control method and device of an extended range engine, a vehicle and a storage medium, and the method comprises the steps that for each air cylinder of the extended range engine, the target correction amplitude corresponding to a current knock signal of the air cylinder is obtained, the absolute value of the target correction amplitude is not larger than the ideal correction amplitude, and the target knock signal of the air cylinder is obtained; the ideal correction amplitude is used for correcting an ignition angle and is a preset correction amplitude threshold value corresponding to a target interval to which current working condition parameters of the extended-range engine belong; according to a preset basic ignition angle of the extended-range engine and the target correction amplitude corresponding to the air cylinder, the target ignition angle of the air cylinder is obtained; ignition angle control is achieved through separate cylinders, each cylinder is combined with a current knock signal, a target ignition angle in a better state is obtained under different working condition parameters, oil consumption is reduced, and the performance of an engine is improved.

The invention discloses a multi-ignition device which comprises a long-strip-shaped shell, a plurality of ignition coils arranged on the lower side face of the shell and a circuit board arranged in the shell, a connecting plug is fixed to the upper side face of the shell, and the connecting plug is connected with an external vehicle controller so as to receive multi-ignition signals. The circuit board is connected between the connecting plug and the ignition coils so as to drive the ignition coils to conduct multiple times of ignition after receiving multiple times of ignition signals. According to the multi-time ignition device, multi-time ignition signals of the external vehicle controller are received through the connecting plug, the ignition coil is driven through the circuit board to achieve multi-time ignition, the ignition efficiency and stability are improved, and the multi-time ignition device meets the complex working condition requirements of a vehicle engine.

One aspect of the invention relates to a method (100) for regulating the engine torque produced by an internal combustion engine of a powertrain provided with a mechanical gearbox, a mechanical clutch and control means, the method (100) being remarkable in that, during the acceleration phase of the powertrain, it comprises the following steps carried out by the control means: • Detecting (101) a desire to shift from a gear ratio N to a higher gear ratio N+n; • Degrading (102) the nominal spark advances of the internal combustion engine so as to reduce the engine torque produced by the internal combustion engine.

Embodiments of the present application provide a method, device and equipment for correcting engine ignition angle and a storage medium. The method comprises: obtaining an intake amount and an injection amount of the engine; determining an air coefficient of the engine based on the intake amount; judging whether the air coefficient meets a preset condition; and determining an engine fuel amount based on the injection amount and an equivalence ratio of the engine in the case that the air coefficient meets the preset condition. By using the technical solution of the embodiments of the present application, in the case of using lean combustion technology, the engine fuel amount is determined by using the injection amount of the engine and the equivalence ratio of the engine, the effective combustion air amount is obtained, the ignition and injection are controlled, the efficient control of the lean ignition time is realized, and technical support is provided for subsequent engine thermal efficiency improvement.

The invention discloses a multi-fuel generator set control system, a control method thereof and a generator set, which are applied to the technical field of generator sets, the multi-fuel generator set control system comprises a multi-fuel generator set and a control system, the control system comprises a fuel change-over switch, an engine starting switch, a carburetor, a fuel gas supply electric control valve, a signal detection module, an ignition device and a control device; a gas fuel supply pipeline of the multi-fuel engine is connected with a gas inlet of the gas supply electric control valve, and a gas outlet of the gas supply electric control valve is connected with a gas fuel inlet of the carburetor. And the signal input end of the fuel type detection circuit is connected with the fuel change-over switch. The temperature sensor is used for detecting a cylinder body temperature signal of the fuel engine and compensating the injection amount of the gas fuel according to the cylinder body temperature signal of the engine. The temperature sensor is used for monitoring the temperature of the cylinder body of the engine in real time, the injection amount of the gas fuel is compensated according to the temperature of the cylinder body of the engine, and the combustion condition in the engine heating process of the engine is stabilized.

The present invention addresses the problem of suppressing an excessive decrease in the output torque of an engine during execution of an inter-cylinder correction process. A drive control device is applied to a vehicle provided with a spark ignition engine having a plurality of cylinders. A first processing circuit of the drive control device executes inter-cylinder correction processing for correcting fluctuations in the magnitude of engine torque at the ignition timing of a plurality of cylinders and adjusting the amount of fuel supplied to the cylinders or the ignition timing for each of the plurality of cylinders. Lower limit protection is set for the amount of fuel supplied to the cylinder or the correction amount of ignition timing when the inter-cylinder correction process is executed.

Internal combustion engine method, comprising: operating an engine in a first mode, the first mode comprising: Confirming the cold start condition of the engine, determining that the boiling point of the fuel in the engine is lower than a threshold boiling point of the fuel, and In response to confirmation of the engine's cold-start condition and determination that the fuel boiling point in the engine is lower than a threshold fuel boiling point, starting the internal combustion engine via a starter motor at an initial cranking speed, while fuel is injected via fuel injectors for a number of combustion engine cycles since the first combustion engine cycle, and subsequently suspending operation of the starter motor and operating the engine via combustion; and Operating the engine in a second mode, the second mode comprising the following: In response to confirmation of the engine's cold-start condition and determination that the fuel boiling point in the engine is higher than a threshold fuel boiling point, the internal combustion engine is started at a second cranking speed while fuel is injected and the ignition spark is deactivated for the number of combustion engine cycles since the first combustion engine cycle, and subsequently the operation of the starter motor is suspended and the engine is operated via combustion, wherein the fuel boiling point is based on a fuel composition in the engine, wherein in the first mode the fuel injection involves initiating fuel supply at top dead center (TDC) of an intake stroke of a combustion engine cycle and terminating fuel supply at bottom dead center (BDC) of the intake stroke of the combustion engine cycle.and wherein, in the second mode, fuel injection includes initiating fuel supply at TDC of the intake stroke of the internal combustion engine cycle and terminating fuel supply at TDC of a compression stroke of the internal combustion engine cycle.

The invention discloses a spark ignition type engine control method, relates to an internal combustion engine, and solves the technical problems of combustion efficiency reduction and single-cylinder misfire easily caused by non-uniform distribution of water in each cylinder in the case of an existing backward temperature compensation technology and a high EGR (Exhaust Gas Recirculation) rate. The method comprises the following steps: acquiring a first humidity value of an intake manifold in an engine, a second humidity value of each cylinder and a reference EGR opening value, calculating a correction coefficient according to the first humidity value, and calculating an EGR target opening value according to the reference EGR opening value and the correction coefficient; and a basic ignition angle is obtained, the humidity offset is calculated according to the second humidity value, the ignition angle compensation amount is calculated according to the humidity offset, and the basic ignition angle is compensated through the ignition angle compensation amount. The invention further discloses a spark-ignition engine control device. It is guaranteed that the engine operates at the knocking boundary for a long time, and efficient combustion is guaranteed.

To solve a piston striking sound problem while suppressing the lowering of engine heat efficiency.SOLUTION: An engine control device has a vibration sensor that detects engine vibrations, and a control system that controls an EGR device and an ignition device. As an EGR control map used for controlling the EGR device, there is a second EGR map in which an EGR rate higher than that of the first EGR map is set. As an ignition control map used for controlling the ignition device, there is a second ignition map in which an ignition timing is set to an advance side compared with the first ignition map. The control system performs band pass filter processing on a vibration signal outputted from the vibration sensor, thereby extracting a signal component in a frequency band relating to piston striking sound. The control system, if the size of the signal component exceeds a threshold value, switches the EGR control map to the second EGR map, and switches the ignition control map to the second ignition map.SELECTED DRAWING: Figure 8

The present invention provides an engine control device that can further reduce engine noise and vibration (NV) (i.e., improve the quietness of the engine). [Solution] The ECU 50 estimates the oil film thickness for each cylinder based on the crank angular velocity, engine load, and oil temperature corresponding to the expansion stroke of each cylinder, and corrects the ignition timing of cylinders whose estimated oil film thickness is thinner than a predetermined value.

An engine having a throttle valve, a filter for collecting an exhaust particulate matter from the engine, and a control device are provided, and the control device includes an acquisition unit for acquiring a temperature of the engine, a regeneration control unit for increasing an opening degree of the throttle valve as the temperature increases, and executing a regeneration control of the filter by a fuel cut. A vehicle comprising: a retard amount control unit that increases a retard amount of an ignition timing at a time of returning from the fuel cut as the temperature increases.

The invention discloses a high-power low-concentration gas generator set control system and method. The system comprises a control system, an engine and a generator. The control system comprises a monitoring unit, an air-fuel ratio control unit, a local operating system, a remote control system, a monitoring management system, a knock monitoring unit, a power and grid-connected control unit and a sensor signal acquisition module. The monitoring unit is respectively connected with the air-fuel ratio control unit, the local operating system, the remote control system, the monitoring management system, the knock monitoring unit, the power and grid-connected control unit and the sensor signal acquisition module; the engine is connected with the sensor signal acquisition module and the knock monitoring unit. And the generator is respectively connected with the sensor signal acquisition module and the power and grid-connected control unit. Long-term stable operation of the unit can be ensured.

To stabilize an engine rotation speed after cold start at the time of using heavy fuel at an early stage while suppressing a total amount of emission of fine particle substance.SOLUTION: An engine ECU decides a final ignition timing on the basis of a catalyst warming-up delay angle amount for promoting warming up of a catalyst, and a rotation speed correction advance angle amount as an advance angle amount for raising an engine rotation speed after starting. Further, when at least one of a first condition that the final ignition timing is nearer to a delay angle side than a specified value after a compression upper dead point and a second condition that the rotation speed correction advance angle amount is a predetermined advance angle amount threshold value or more is satisfied, a cylinder injection valve is controlled so that a required fuel injection amount is injected while being divided into a plurality of times and also atomization formed by a latest final fuel injection of the fuel injection divided into a plurality of times is ignited by a spark of an ignition plug.SELECTED DRAWING: Figure 1

A vehicle control system (S) includes a forward situation detection device (200) configured to detect a situation ahead of a vehicle (1), a vibration source (20) configured to generate vibration to be transmitted to a driver of the vehicle (1), and a controlling unit (150) configured to, for each degree of urgency obtained by using information detected by the forward situation detection device (200), execute control of changing a state of vibration of the vibration source (20, 20', 51, 53, 63, or 75) to a state corresponding to the degree of urgency.

The invention discloses an engine EGR rate and ignition angle control method, device and equipment and a medium, and relates to the technical field of hybrid automobiles, the method comprises the steps that a VVT angle mapping table obtained based on engine oil consumption calibration is obtained, and the VVT angle mapping table defines VVT angles of an engine under different working conditions; determining a target VVT angle of the engine based on the VVT angle mapping table; determining an initial EGR rate and an initial ignition angle based on the standard environmental parameters and the target VVT angle; acquiring current environment parameters of the engine; and on the basis of the current environment parameters and the standard environment parameters, collaborative optimization adjustment is conducted on the initial EGR rate and the initial ignition angle, and in the collaborative optimization adjustment process, the target EGR rate and the target ignition angle in the current environment are determined on the basis of the pressure fluctuation rate of the intake manifold.

An engine controller includes an exhaust gas recirculation valve, a fuel injection device, an ignition device, and a controller including a processor. The processor includes a requested torque setter, a surplus torque setter, a comparator, and a correction torque setter. The requested torque setter sets requested torque, on the occasion of restoration from fuel cut. The surplus torque setter sets, on the occasion of the restoration from the fuel cut, surplus torque in combustion based on a flow rate of the air to pass through the exhaust gas recirculation valve. The comparator makes a comparison between the requested torque and the surplus torque. The correction torque setter sets, based on a result of the comparison, correction torque to correct the amount of the air to pass through a throttle valve and to make retard correction of ignition timing.