38results about "Engine revolutions" patented technology

A method of controlling the delivery of fluid to an engine includes receiving a fuel flow rate signal. An electric pump is arranged to deliver fluid to the engine. The speed of the electric pump is controlled based on the fuel flow rate signal.

An oil supply system for a reciprocating piston internal combustion engine is disclosed in which the supply of oil to piston cooling jets is controlled by pressure operated valves designed to open at a pre-defined valve opening pressure. The pressure of oil supplied by a pump is controlled to be below this pre-defined valve opening pressure during operation of the engine in which piston cooling is not required, and the pressure of oil is controlled to above the pre-defined valve opening pressure when piston cooling is required. The control of the pump is by an electronic control unit based upon a combination of engine speed and engine load.

Disclosed is an oil jet device for cooling a piston, including: an oil cooler 4 that is disposed upstream of an oil injection nozzle 8; an oil pump 5 that is disposed upstream of the oil cooler 4; a first switching adjustment valve 6 that is disposed between the oil injection nozzle 8 and the oil cooler 4 and adjusts a flow dividing ratio at which the cooling oil from the oil cooler 4 is distributed to the oil injection nozzle 8 side and to an oil pan side; and a control unit that has an oil quantity adjustment map 4 for switching the first switching adjustment valve 6 based on a piston temperature calculation map 20 for calculating the temperature of the piston 1 using detection values acquired respectively by a cooling water temperature sensor 35, a rotation speed sensor 36 and a load sensor 37.

The invention provides a variable displacement oil pump control system and a control method thereof. A first feedback oil duct and a second feedback oil duct of the control system are both connected between a main oil duct and a variable displacement oil pump. An electromagnetic valve is installed on the first feedback oil duct and is connected with an ECU through a wiring harness. A sensor set is in signal connection with the ECU. The ECU receives detection signals of the sensor set, control signals are sent to the electromagnetic valve after the detection signals are analyzed and judged by a control strategy module inside the ECU, and the electromagnetic valve executes corresponding movements according to the control signals. By the adoption of the control method, the ECU is used for receiving the engine rotating speed, engine loads, oil temperature signals and oil pressure signals sent by the sensor set, and the working mode of the variable displacement oil pump can be intelligently selected through the internal control strategy module inside according to the actual using conditions of an engine. By means of the variable displacement oil pump control system and the control method thereof, the displacement of the oil pump can be intelligently adjusted, the problem that the capacity of a commonly-used working condition oil pump of the engine is excessive and thus oil consumption is made high is solved, and the oil economy of an entire vehicle is improved.

A variable displacement vane-type fluid pump is provided which permits improved regulation of the pump discharge such that the pump can meet the various requirements of lubrication for internal combustion engines at all speeds with minimized use of power. Of course, the vane pump may also be utilized in a wide range of power transmission and other fluid distribution applications. The vane pump of the invention may also use both hydrostatic and mechanical actuators to control the position of its containment ring or eccentric ring and hence, regulate the output of the pump. According to yet another aspect of the present invention, to prevent inlet flow restriction or cavitation, a valve may be provided to permit some of the pump outlet or discharge flow to bleed into the pump inlet to provide needed velocity energy to the fluid flow into the pump inlet. A system for lubrication of an engine using a fixed displacement pump for providing an engine speed input for controlling a second main variable displacement type oil pump and maintaining a target oil pressure in the oil pressure circuit. A solenoid valve is used for venting output of the fixed displacement pump to create a second target oil pressure characteristic or curve when desired.

A pressure regulator for a power source may include a housing in fluid communication with a pressurized fluid line and a reservoir, and a pressure relief valve having an open position that creates a flow path between the pressurized fluid line and the reservoir, and a closed position. The pressure relief valve may open when an opening force exerted by pressurized fluid entering the housing overcomes a closing force acting on the pressure relief valve, allowing pressurized fluid to flow from the pressurized fluid line to the reservoir. The pressure regulator may also include a governor coupled to the pressure relief valve, wherein the governor is configured to regulate the pressure in the pressurized fluid line by selectively adjusting the closing force exerted on the pressure relief valve based on engine speed.

The invention relates to a method and apparatus to regulate oil pressure via controllable piston cooling jets. A method of regulating oil pressure within an engine assembly is provided. The engine assembly includes an oil pump configured to provide oil to an oil system of the engine assembly; a piston cooling jet configured to direct a jet of oil from the oil system towards a piston of an engine;and an electronic control valve configured to control the flow of oil to the piston cooling jet. The method includes operating the electronic control valve to provide a flow rate of oil above a threshold flow rate to the piston cooling jet when the engine assembly is operating above a threshold power output or engine running speed; and regulating the pressure of oil within the oil system when theengine assembly is operating below the threshold power output or engine running speed, by operating the electronic control valve.

The application provides a pressure control device, system and method for controlling an output oil pressure of an electric pump. The system is composed a motor, an oil pump driven by the motor, a motor driver circuit connected with the motor, and a pressure control device. The pressure control device is configured to output a target value of the oil pressure based on the oil pump, an obtained estimated motor electromagnetic torque corresponding to the target value, and an actual detection current flowing through the motor and determine an electrification voltage of the motor; and power is provided for the motor based on the electrification voltage by the motor driver circuit.

The invention relates to a method of controlling an oil pump of a vehicle. The method includes: acquiring, by a controller, information on an engine operating state or a driving condition detected bya driving information detection part; determining, by the controller, whether a predetermined condition of an alternate mode is satisfied on the basis of the acquired information on the engine operating state or the driving condition; and, when the condition of the alternate mode is satisfied, sequentially performing, by the controller, a high-pressure operation control that controls an operationof an oil pump system so as to an oil pressure of an engine to converge on a predetermined target high-pressure value and a low-pressure operation control that controls the oil pressure of the engineto converge on a predetermined target low-pressure value.

A centrifuge for separating solids from a liquid including a centrifuge rotor with a rotor shaft, partially formed as a hollow shaft, and a centrifuging drum, being rotatable with the rotor shaft, wherein the liquid to be separated can be supplied via the cavity of the hollow shaft. To ease emptying of the drum, the centrifuging drum includes a drum lower part and a drum upper part, which bears loosely against the drum lower part. The upper part is guided in an axially movable manner on the shaft and is movable by means of a disengagement mechanism parallel to the rotor axis into an open position in which, for self-emptying of the interior space, the drum parts are spaced apart from one another while they still rotate with the rotor shaft.

A diagnostic method for an oil piston cooling jet valve of an oil pressure system of an internal combustion engine of a motor vehicle, including: Driving the OPCJ valve for detecting oil pressure diagnostic data if multiple enabling conditions have been met, the multiple enabling conditions including: Presence of a stationary operation of the internal combustion engine; presence of a predetermined operating range; presence of an oil temperature within a predetermined oil temperature range; prevention of a scheduled driving of the OPCJ valve for regular piston cooling; and prevention of an error of the oil pressure system. The diagnostic method further including: Determining whether an oil pressure measuring point is within a predefined oil pressure measuring point range. The invention further relates to a diagnostic device, a control unit and a motor vehicle, which are each suitable or configured for carrying out the method.

The invention discloses an engine lubricating system. The system comprises a variable displacement oil pump, an oil filter and a cylinder body main oil duct which are sequentially connected in series, one end of the cylinder body main oil duct is connected to an oil return opening of the variable displacement oil pump through an oil pump feedback oil duct and an oil pump OCV in sequence, the other end of the cylinder body main oil duct is connected to a piston cooling nozzle through a piston cooling nozzle oil duct and a piston cooling nozzle OCV in sequence, the oil pump OCV is connected with an oil pump one-way valve in parallel, and the piston cooling nozzle OCV is connected with a piston cooling nozzle one-way valve in parallel. The signal input end of a control unit is connected with an oil pressure sensor and an engine, and the signal output end of the control unit is connected with the oil pump OCV and the piston cooling nozzle one-way valve. The invention further discloses a control method of the engine lubricating system. The control method comprises the steps that judgment is conducted according to four obtained parameters and signals, and four control modes are executed. The situation that a piston cannot be lubricated due to failure of a lubricating system control valve is avoided, and the situation that the piston cannot be lubricated under long-term low-load low-rotating-speed conditions is avoided.

The invention relates to a system for influencing the sliding properties of the sliding surfaces of a sliding pair by supplying the sliding surfaces with a conditioning agent, a plurality of different components being used to produce the conditioning agent. A good functioning of the sliding pair can be obtained in the long term by dynamically conditioning the sliding properties of the sliding surfaces, the sliding situation of the sliding surfaces being continuously monitored and the conditioning agent supplied to the sliding surfaces being optimized depending on the current sliding situation.

The invention provides a blow-by gas delivery path abnormality detection device for an internal combustion engine, which can accurately detect blow-by gas leakage abnormality. A learning completion neural network in which an engine load, an engine rotational speed, and an intake air pressure in an engine intake passage downstream of a throttle valve (19) are stored as input parameters of the neural network, and weight learning is performed as a truth value tag when blow-by gas leaks from a blow-by gas delivery passage (20). When the vehicle is running, the learned neural network is used to detect a leak abnormality of blow-by gas from the blow-by gas delivery path (20) on the basis of the input parameter.