Abstract: A connector includes: a connector body formed in a tubular shape; and a valve body stored inside the connector body, the valve body being configured to, when high-pressure fuel does not flow back, come into a first state in which a forward flow path is formed between the valve body and an inner circumferential surface of the connector body by a pressure of low-pressure fuel, and when high-pressure fuel flows back, come into a second state in which an orifice flow path having a smaller flow path sectional area than the forward flow path is formed between the valve body and the inner circumferential surface of the connector body.

Abstract: A connector includes: a connector body formed in a tubular shape; a valve housing formed in a tubular shape and provided inside the connector body with a seal structure interposed therebetween, the seal structure restricting flow of fuel between the valve housing and an inner circumferential surface of the connector body; and a valve body stored inside the valve housing, the valve body being configured to, when high-pressure fuel does not flow back, come into a first state in which a forward flow path is formed between the valve body and an inner circumferential surface of the valve housing by a pressure of low-pressure fuel, and when the high-pressure fuel flows back, come into a second state in which an orifice flow path having a smaller flow path sectional area than the forward flow path is formed between the valve body and the inner circumferential surface of the valve housing.

Abstract: A method of operating an aircraft engine of an aircraft, the aircraft engine having a common-rail fuel injection system for injecting fuel into a combustion chamber of the aircraft engine, including: pressurizing fuel for circulation through the common-rail injection system; circulating a portion of the pressurized fuel through a motive flow inlet of an ejector pump; and entraining a flow through the ejector pump with the portion of the pressurized fuel circulating through the motive flow inlet.

Abstract: An engine control system includes: a delay estimating unit configured to estimate a auto-ignition delay based on first parameters including a composition of fuel gas; a auto-ignition predicting unit configured to predict a auto-ignition timing based on the auto-ignition delay; a completion predicting unit configured to predict a combustion completion timing of the fuel gas; and an operation control unit configured to control an engine based on a result of comparison between the auto-ignition timing and the combustion completion timing.

Abstract: A control device of an internal combustion engine includes: a parameter value acquiring part acquiring values of input parameters; a computing part utilizing a model using a neural network to calculate a value of an output parameter, and a control part controlling operation of the engine. The model outputs the value of the output parameter from an output layer node if the values of the input parameters are input to the input layer nodes. When an abnormality occurs at values of part of the input parameters among the input parameters, the computing part uses the corrected model to calculate the value of the output parameter, the corrected model being provided by correcting the model so that a value changing in accordance with a value of an abnormal input parameter is not input from a input layer node corresponding to the abnormal input parameter to a hidden layer node.

Abstract: A method for controlling the air-fuel ratio of a vehicle includes: calculating the air amount charged in a cylinder of an engine by using a fresh air amount, a residual air amount remaining inside the cylinder of the engine, and a backflow gas amount flowing back into the cylinder upon the valve overlap of an intake vale and an exhaust valve of the engine, correcting it with the purge gas flow rate supplied to an intake manifold of the engine when the active purge system is operated, calculating the final fuel amount by correcting the fuel amount injected by a fuel injection device with the amount of the fuel component contained in the purge gas when the active purge system is operated, and controlling the air-fuel ratio based on the final air amount and the final fuel amount.

Abstract: An apparatus and method of forming an engine component having an outer wall forming an interior. The interior can be separated into two or more flow paths or flow channels. The two flow paths can be formed by casting having one or more core ties connecting the flow paths during casting. One or more core tie holes can be formed remnant of the core ties during casting in order to fluidly couple the two or more flow paths or flow channels.

Abstract: A system is provided for controlling operation of an engine brake system of an engine in a vehicle. The system includes a controller having an over-speed condition detection unit and an operation mode transition unit. The over-speed condition detection unit is configured to detect an over-speed condition based on a current engine speed and a fuel cut limit speed, the fuel cut limit speed being a predetermined engine speed at which fuel supplied to the engine is suspended. The operation mode transition unit is configured to control the operation of the engine brake system by transitioning the controller between a plurality of brake operation modes based on at least one transition parameter.

Abstract: A combustion chamber structure for an engine includes a combustion chamber where SI combustion by spark ignition and CI combustion by self-ignition are conducted. A crown surface includes a cavity recessed to have a bowl-shape; a pair of first raised portions having a mound-shape along a pent roof shape; and a second raised portion provided to protrude at a position orthogonal to a ridge extending direction of the pair of first raised portions. With a height of the first raised portion relative to a height position of a deepest portion of the cavity being represented as H1 and a height of the second raised portion being represented as H2, H1/H2 as a ratio of the height H1 of the first raised portion to the height H2 of the second raised portion is set to be in a range of 1.92 or more and 2.75 or less.

Abstract: Systems and methods for managing auto start of a vehicle during an auto-stop condition may include: determining an operational status of a vehicle climate control system; receiving a target air outlet temperature from the vehicle climate control system; receiving data indicating a state of a cooled seat of the vehicle; and inhibiting a start-engine command to restart an internal combustion engine of the vehicle because of a cabin cooling requirement when the data indicates that the cooled seat of the vehicle is activated.

Abstract: An engine start control device that is capable of winding back a crankshaft more quickly at the time of an idling stop includes a swingback controller for performing a swingback control process for reversing a crankshaft when an engine is started by operating a starter switch, a windback reverse controller for performing a windback control process for reversing the crankshaft immediately after the engine is stopped by the idling stop control process, and a motor brake controller for performing a motor brake control process for braking the crankshaft reversed by the windback control process by rotating the crankshaft in the normal direction after the windback control process performed by the windback reverse controller. The value of a motor current supplied at the time the crankshaft is reversed by the windback reverse controller is set as a value equal to or larger than the value of a motor current supplied at the time the crankshaft is reversed by the swingback controller.

Abstract: In an internal combustion engine, fluctuations in combustion torque are suppressed to reduce vibration and prevent deterioration of ride comfort of a driver. Therefore, a control device of an internal combustion engine 100 having a plurality of cylinders 150 (a first cylinder 151, a second cylinder 152, a third cylinder 153, and a fourth cylinder 154) includes a combustion state detection unit for detecting whether the plurality of cylinders 150 are in a normal combustion state or a flame-out state, and a control device 1 which controls driving of a fuel pump 131 that is a load of a combustion torque generated by the cylinder 150. The control device 1 suppresses the driving of the fuel pump 131 at a predetermined combustion timing of the cylinders 151 to 154 of the flame-out state in a case where it is determined that any one of the cylinders 151 to 154 among the plurality of cylinders 150 is in the flame-out state.

Abstract: Systems and methods are provided for determining a temperature of a thermal system that includes fluid conduits. A sensor monitors a current state of the temperature. A controller receives a signal from the sensor that is representative of the current state; determines a flow in the fluid conduits; determines a noise covariance of the thermal system; processes a thermal model of the thermal system; predicts a next-step state of the parameter at a time after the current state; and corrects the next-step state based, at least in-part, on the noise covariance resulting in a corrected next-step state.

Abstract: A machine learning device of an amount of unburned fuel using a neural network in which the correlation functions showing correlations between parameters and an amount of unburned fuel are found for parameters relating to operation of an internal combustion engine, and the parameters with strong degrees of correlation with the amount of unburned fuel exhausted from the engine are selected from among the parameters based on the correlation functions. The amount of unburned fuel is learned by using the neural network from the selected parameters and amount of unburned fuel.

Abstract: This disclosure is directed to vehicle fuel systems capable of isolating the energy within a fuel tank from the vehicle user. An exemplary fuel system may include a first valve located within a fuel inlet conduit and a second valve located within a vapor recovery recirculation line of the fuel system. The first and second valves may be controlled based on the pressure inside a fuel tank of the fuel system. Fuel may only be transferred into the fuel tank when the fuel tank is within a predefined threshold pressure range. A depressurization sequence of the fuel tank may be automatically initiated when a fuel door of the fuel system is moved to an open position. The positioning of the fuel door may be monitored by a fuel door position monitoring device.

Abstract: A control apparatus for an engine includes an engine, a state quantity setting device, a spark plug, and a controller. The spark plug ignites air-fuel mixture at predetermined ignition timing so that unburned air-fuel mixture combusts by autoignition after start of combustion of the air-fuel mixture by the ignition, and the controller adjusts a heat amount ratio in accordance with an operation state of the engine through change of the ignition timing, the heat amount ratio representing an index associated with a ratio of an amount of heat generated when the air-fuel mixture combusts by flame propagation with respect to a total amount of heat generated when the air-fuel mixture combusts in the combustion chamber.

Abstract: Methods and systems are provided for operating a variable displacement engine that includes a knock control system. Engine knock background noise levels determined during all cylinders operating mode may be applied when one or more cylinders are deactivated to determine the presence or absence of engine knock. Additionally, engine knock background noise levels determined during all cylinders operating mode may be applied when one or more cylinders are reactivated such that the engine operates with all cylinder combusting so that the possibility of indicating knock when knock is not present may be avoided.

Abstract: Methods and systems are provided for conducting a diagnostic on a fuel tank isolation valve that regulates a flow of fuel vapors from a fuel tank to an evaporative emissions system. In one example, a method comprises determining whether the fuel tank isolation valve is stuck in a first open position or a second open position based on a time duration between commanding open a canister purge valve to direct fuel vapors to an engine, and an exhaust gas sensor indicating a rich air-fuel ratio. In this way, appropriate mitigating action may be taken in response to the fuel tank isolation valve being stuck in either the first open position or the second open position.

Abstract: When a purge valve opens, a CPU calculates a purge concentration learning value based on an air-fuel ratio detected by an air-fuel ratio sensor. Additionally, under the condition that a temperature increase request of a three-way catalyst is generated, the CPU performs dither control that sets one of a plurality of cylinders as a rich combustion cylinder, which is richer than a theoretical air-fuel ratio, and the remaining cylinders as lean combustion cylinders, which are leaner than the theoretical air-fuel ratio. When the dither control is performed, the CPU forbids the update of the purge concentration learning value.

Abstract: A vehicle includes a variable displacement engine and a controller. The variable displacement engine has a plurality of cylinders and is configured to operate at a commanded air-fuel ratio. The controller is programmed to, in response to a command to perform a diagnostic test, operate the engine such that each of the cylinders is shut down for a portion of the diagnostic test while one or more of the remainder of the cylinders remain operating. The controller is further programmed to, in response to a deviation from the commanded air-fuel ratio exceeding a threshold while a first of the cylinders is shut down during the diagnostic test and a subsequent command to decrease the number of operating cylinders, shut down one or more of the plurality of cylinders other than the first of the cylinders.