An intake manifold may include a manifold inlet connected with an intake line into which fresh air flows and a recirculation line into which exhaust gas recirculation (EGR) gas flows; a manifold pressure sensor for measuring pressure of fluid flowing through the manifold inlet; and a sensor housing fluidly communicating with the manifold inlet and including a mounting space in which the manifold pressure sensor is mounted.

A cooling control system for an internal combustion engine, which is capable of efficiently driving an electric water pump, thereby improving fuel economy as much as possible while properly performing cooling of supercharged intake air by an intercooler. The engine to which the present invention is applied includes a turbocharger for supercharging intake air and is configured such that electrical power is generated by a generator using the engine as a motive power source, during a decelerating fuel-cut operation in which fuel supply is stopped. The cooling control system of the present invention includes the intercooler of water-cooled type which cools the intake air supercharged by the turbocharger by using coolant circulating through an intake air cooling circuit and an electric pump for circulating the coolant through the intake air cooling circuit, and drives the electric pump during the decelerating fuel-cut operation.

A method is provided for measuring exhaust gas recirculation (EGR) flow in. an engine system wherein turbo speed of a turbocharger, inlet pressure upstream of a compressor, boost pressure upstream of an engine, and engine intake temperature upstream of the engine are measured. Air mass flow into the engine system is calculated as a function of the turbo speed, inlet pressure, and boost pressure, exhaust mass flow is calculated as a function of the boost pressure, the engine intake temperature, volumetric efficiency of the engine, and engine size, and EGR flow is determined, by subtracting air mass flow from exhaust mass flow. A method for controlling emissions from an engine system, and an. engine system are also provided.

A vehicle gas processing device is configured to supply gas generated by a vehicle to an intake pipe of a combustion engine. The device may includes: a gas pipe configured to communicate a gas generation source to the intake pipe, the gas pipe having a flexible end at least at an intake pipe side of the gas pipe; a check valve disposed between the intake pipe and the gas pipe, and configured to allow the gas to flow from the gas pipe toward the intake pipe and prohibit the gas to flow from the intake pipe toward the gas pipe; and a determining unit configured to determine that the gas pipe is detached from the check valve. The check valve is fixed to the intake pipe, and the gas pipe is detachably attached to the check valve.

A method for checking the function of a pressure sensor in the air intake tract or gas outlet tract of an internal combustion engine and to an engine control unit for carrying out the method and based on measuring dynamic pressure oscillations of the intake air or the exhaust gas by the relevant pressure sensor and, on the basis of the pressure oscillation signal obtained, respectively determining with the aid of a discrete Fourier transformation for a number of selected signal frequencies in each case a value of a specific operating characteristic of the internal combustion engine and deviation values of the values determined for the different signal frequencies from one another. Depending on whether deviation values determined fall below or exceed a predetermined limit value, the satisfactory function of the pressure sensor is confirmed, or a malfunction of the pressure sensor is diagnosed.

To obtain a physical quantity detection device that can prevent a thermal influence on a sensor due to downsizing. A physical quantity detection device of the present invention includes a chip package in which a flow sensor and an electronic component are sealed using resin and a circuit board on which the chip package is mounted. The chip package is fixed to a circuit board surface of the circuit board with a part of the chip package protruding laterally from an end of the circuit board, and the circuit board includes a flat margin region S wider than a width of the chip package, the margin region S being provided at a position on a circuit board surface and at a position biased in an opposite direction to a protruding direction from the chip package.

A tire management system includes a control valve and a check valve. A method for managing a tire includes: determining a pressure parameter value, determining an operational parameter for a valve based on the pressure parameter value, and controlling the valve based on the operational parameter.

Methods and systems are provided for diagnosing temperature sensors of a vehicle. In one example, a method may include, at a duration after an engine-off event, determining that an intake air temperature measured by an intake air temperature sensor of the vehicle is less than an ambient air temperature measured by an ambient air temperature sensor of the vehicle. In response to the determining, the method may include flowing air from a catalyst across the intake air temperature sensor; and indicating the intake air temperature sensor is functional responsive to the intake air temperature converging to the ambient air temperature during the flowing.

An intake and exhaust system for preventing generation of condensed water may include: an exhaust gas recirculation (EGR) system circulating some of combustion gas from an exhaust pipe to an intake pipe; an active purging system compressing and supplying evaporation gas generated from a fuel tank to the intake pipe; and a controller to control the EGR system and the active purging system. In particular, the controller calculates a saturated water vapor pressure based on temperature at a position between the EGR system and the intake pipe, and calculates a saturated water vapor pressure based on temperature of the intake pipe and then compares one of the two saturated water vapor pressures with a water vapor pressure of intake air so as to reduce an EGR rate of the EGR system or a purging rate of the active purging system based on the comparison result.

A system that provides an estimation of quantities, which are not necessarily directly measurable in a subsystem. The estimates of these quantities may be inferred from other variables. This approach may be referred to as inferential sensing. Physical sensors may be replaced with models or virtual sensors, also known as inferential sensors. The present approach may be a framework for designing inferential sensors in automotive subsystems. The framework may incorporate preparing a model for an observed subsystem, populating a real-time template with data, and running an inferential sensor periodically together with a model in real-time to obtain estimated variables. Once implemented, the framework may be reused for virtually any automotive subsystem without needing significant software code changes.