Abstract: The invention relates to a fluid circuit (3) comprising: —a supply line (5) for carrying a fluid from a pump (4) connected to a fluid tank (2) to an equipment (8), the supply line having a portion which is divided into a main line (10) including a heat exchanger (13), and a by-pass line (15) for by-passing said heat exchanger; —a first valve (31) for controlling the respective fluid flows in the main line (10) and in the by-pass line (15), and a first control device (33) for controlling the first valve (31) depending on a first parameter (T) of the fluid; —a pressure regulation circuit for carrying fluid from the supply line (5) towards the fluid tank (2), said pressure regulation circuit comprising a pressure regulation valve (23) for controlling the flow of fluid directed back to the fluid tank (2); wherein the pressure regulation circuit comprises: —a first recirculation line (21) branching from the supply line (5) downstream from the by-pass line outlet (17); —a second recirculation line (22) branching fr

Abstract: An internal combustion engine includes an engine block including a cylinder a piston positioned within the cylinder and configured to reciprocate in the cylinder, an electronic throttle control system comprising a motor and a throttle plate, a fuel system for supplying a controlled amount of fuel to the cylinder including a fuel injector, and an engine control unit coupled to the fuel system and the electronic throttle control system. The engine control unit is configured to determine engine speed data comprising a current engine speed, a previous engine speed, and a desired engine speed and control a fuel injection duration based on the engine speed data.

Abstract: Methods and systems are provided for an evaporative emissions control system for onboard refueling vapor recovery of a heavy duty vehicle. In one example, a method may include, in response to greater than a threshold change in a fuel level of a fuel tank fluidically coupled to at least two fuel vapor storage canisters of an evaporative emissions control system during a refueling event, performing a canister working capacity diagnostic on each of the at least two fuel vapor storage canisters by measuring an exhaust gas air-fuel ratio (AFR) while independently purging each of the at least two fuel vapor storage canisters. In this way, the working capacity of each fuel vapor storage canister may be separately assessed in order to more accurate identify degradation of the working capacity.

Abstract: A system and method for retrofit engine start/stop control system for an air starter equipped internal combustion engine includes a circuit to energize and air control value, an air pressure sensor, a programmable logic controller, an engine block temperature sensor to measure an external engine temperature, an ambient temperature sensor, an ignition circuit connector, a battery voltage sensor, and an engine speed sensor. The programmable logic controller is configured to start the engine when at least one of the pressure of the compressed gas tank, an external engine block temperature, an ambient air temperature, and a battery output voltage fall below a predefined threshold value for startup.

Abstract: A tank device for a motor vehicle includes a tank container defined by a tank wall having at least one stop region, and at least one lever sensor arranged in the interior of the tank container. The at least one stop region is an end stop for the lever sensor to prevent adhesion of the lever sensor to the tank wall.

Abstract: A vehicle system may include a memory of a vehicle configured to maintain at least one smart contract between a manufacturer of the vehicle and a supplier of components to the manufacturer, and a processor of the vehicle configured to receive at least one diagnostic code from the vehicle, the diagnostic code being associated with at least one vehicle component, in response to the code being identified by the processor as being associated with the at least one smart contract, update the at least one smart contract within the memory with the code, and transmit the smart contract, as updated, to a third party associated with the vehicle component.

Abstract: A system and a method for diagnosing a problem with a motor vehicle using sound. Ambient noise information for the motor vehicle is determined. Current sound information is received, and whether there is a variation in sound between the current sound information and the ambient noise information is determined. The ambient noise information is subtracted from the current sound information if the variation has been identified, to identify a sound anomaly. A sound anomaly signal is extracted and compared with predetermined anomaly signal information stored in a database. The predetermined anomaly signal information is associated with diagnostic information.

Abstract: According to one embodiment, a method of generating warning messages based on system load of an autonomous driving vehicle can relieve a safety operator of the burden of constantly monitoring the vehicle and outside driving environments. The method uses a threshold for each of a number of system load parameters to determine whether the vehicle has a heavy system load that needs the attention of the safety operator. In one example, the vehicle can use a CPU usage threshold and an end-to-end latency threshold to determine whether the vehicle has a heavy system load while travelling on a road segment. If any of the thresholds is exceeded, the vehicle can send a warning message to the safety driver. The system load thresholds may be determined from data collected from the autonomous driving vehicle when it previously travelled on the road segment.

Abstract: Various embodiments of the present disclosure are directed towards free-piston combustion engines. As described herein, a driver section may be provided in a free-piston combustion engine for storing energy during an expansion stroke. The driver section may be configured to store sufficient energy to perform the subsequent stroke. In some embodiments, the driver section may be configured to store sufficient energy so as to enable the engine to operate continuously across engine cycles without electrical energy input. A linear electromagnetic machine may be provided in a free-piston combustion engine for converting the kinetic energy of a piston assembly into electrical energy.

Abstract: A system is described that can include a first database, a simulator, and a second database. The first database can store data indicating operation of at least one module within a computing device of an autonomous vehicle. The simulator can receive the stored data from the first database. The simulator can generate, based on the received data, a simulation of the operation of the at least one module. The simulator can identify at least one portion of the simulation that indicates a deviation between the collected data and the simulated operation of the autonomous vehicle. The simulator can analyze the at least one portion of the simulation to generate metrics for the at least one portion of the simulation. The metrics can be used to avoid another deviation between the collected data and the simulated operation of the autonomous vehicle. The second database can store the metrics.

Abstract: A variety of methods and arrangements for reducing noise, vibration and harshness (NVH) in a skip fire engine control system are described. In one aspect, a firing sequence is used to operate the engine in a skip fire manner. A smoothing torque is determined that is applied to a powertrain by an energy storage/release device. The smoothing torque is arranged to at least partially cancel out variation in torque generated by the skip fire firing sequence. Various methods, powertrain controllers, arrangements and computer software related to the above operations are also described.

Abstract: A system for inspecting vehicle pull of a vehicle includes: a sensor monitoring device that collects information for vehicle pull inspection from a sensor installed in the vehicle; a travel path measurement device that measures a travel path of the vehicle in a vehicle pull measurement section; and a vehicle pull analysis device that determines whether the vehicle passes the vehicle pull inspection, based on the sensing information collected from the sensor monitoring device and travel path measurement information collected from the travel path measurement device.

Abstract: Vehicle fuel volume estimation systems and methods are provided herein. An example method includes determining a fuel level percentage value for a vehicle, determining a vehicle identification number (VIN) of the vehicle, determining a fuel tank part number using the VIN, converting the fuel level percentage value into a fuel volume value based on the fuel tank part number, and transmitting a message to a recipient, the message that includes the fuel volume value.

Abstract: A vehicle includes a main drive unit, a sub drive unit, and a control unit. The control unit includes a driving force distribution ratio setting unit and is configured to control the main drive unit and the sub drive unit. A drive mode of the main drive unit includes an electric power drive mode and an engine drive mode. The driving force distribution ratio setting unit is configured to set the driving force distribution ratio based on a vehicle speed, a required driving force, and the drive mode. When the drive mode is the engine drive mode, the driving force distribution ratio setting unit is configured to set the driving force distribution ratio so that a distribution ratio of the main driving force is 90% or more.

Abstract: A canister that adsorbs and desorbs fuel vapor generated in a fuel tank of a vehicle includes a housing and at least one expansion inhibitor. The housing is in a form of a cylinder configured to be filled with activated carbon. The housing includes a filled portion which is an area in the housing filled with the activated carbon; an unfilled portion which is an area in the housing not filled with the activated carbon; a boundary portion that defines a boundary between the filled portion and the unfilled portion; and a center portion which is situated at the axial center of the filled portion. The at least one expansion inhibitor inhibits an expansion of the boundary portion in an outward direction from being greater than an expansion of the center portion in the outward direction.

Abstract: Methods and systems for determining pressure changes across at least two fuel vapor storage canisters are described. The methods and systems may include determining the pressure changes via a sole pressure sensor. In one example, fuel vapor canister bypass passages are provided to determine pressure values at a plurality of positions within an evaporative emissions system.

Abstract: A predictive driver intention to stop (DITS) system for a vehicle having an engine includes one or more sensors configured to measure a set of operating parameters of the vehicle including at least (i) vehicle speed and (ii) vehicle deceleration rate. A controller is configured to identify no-stop braking events and complete stop braking events, and reference a generated baseline probability table indicating a probability of a driver braking to bring the vehicle to a stop, based on at least the vehicle speed and vehicle deceleration rate measured during at least one of the identified no-stop braking events and complete stop braking events. The controller is further configured to predict a DITS event based on the generated baseline probability table, and control operation of the engine based on the predicted DITS event to facilitate reducing vehicle fuel consumption and/or tailpipe emissions.

Abstract: Time required by a crankshaft to rotate 30° CA from a compression top dead center is defined as time T30. A CPU calculates a rotation fluctuation amount ?T30 related to a cylinder subject to determination of a misfire by subtracting a value related to a cylinder in which a compression top dead center occurred immediately before the cylinder subject to the determination from a value related to the subject to the determination. The rotation fluctuation amount ?T30 that corresponds to a cylinder in which a combustion operation is stopped is used as a reference value ?T30ref. When a combustion operation is performed, it is determined that there is a misfire if the absolute value of the difference between the rotation fluctuation amount ?T30 and the reference value ?T30ref is less than or equal to a determination value ?th.

Abstract: An inductor includes a body, a coil disposed inside the body, and first and second external electrodes disposed on one surface of the body to respectively be connected to both ends of the coil. A recess portion is disposed in a region between the first and second external electrodes on the one surface of the body.

Abstract: A high-pressure pump includes a pressurizing chamber forming portion, a suction passage forming portion, a seat member, a valve member, a cylindrical member, a needle, a movable core, a biasing member, a fixed core, and a coil including a winding portion. The coil generates an attractive force between the fixed core and the movable core when the winding portion is energized. The coil includes an outer cylindrical surface and multiple inner cylindrical surfaces that have different diameters. The multiple inner cylindrical surfaces are arranged in order of increasing diameter in a direction toward a pressurizing chamber. The movable core has an end surface that faces the fixed core, and the end surface of the movable core is located between a center, in an axial direction, of a smallest diameter one of the plurality of inner cylindrical surfaces and a center, in an axial direction, of the outer cylindrical surface.