A hydrogen-oxygen cycle engine. The hydrogen-oxygen cycle engine comprises a cylinder assembly, a hydrogen supply assembly, an oxygen supply assembly, a cycling medium assembly, an atomized water assembly, a condensate water recovery assembly and a control system. Said engine has the advantages of reasonable structural design, high automation degree, no carbon emission, etc., and can thoroughly solve the problem of environmental pollution. Also provided is a using method for the engine.

A control device for an internal combustion engine can correct precisely a detection result of an in-cylinder pressure sensor which may generate a detection error in a temperature changing process, to control the operation with a smaller error. The control device includes: an operational parameter calculating section that calculates an operational parameter related to control of the engine based on the sensor signal from the sensor; a sensor temperature estimating section that estimates a current temperature change amount of the sensor based on an operating state of the engine; a storage section which stores a correction amount map indicating a correction amount for an operational parameter in accordance with a temperature change amount of the sensor; and an operational parameter output section that corrects the calculated operational parameter with reference to the correction amount map based on the estimated temperature change amount of the sensor, to output the corrected operational parameter.

A method of estimating a compressor inlet pressure for a turbocharger includes: measuring an ambient temperature of air flowing into the compressor; measuring a flow rate of the air into the compressor; measuring a boost pressure of the air from the compressor to an engine; determining a speed of a turbine of the turbocharger; defining a pressure ratio as the ratio of the boost pressure to the compressor inlet pressure; defining a function as the function of the compressor flow rate, the ambient temperature, the compressor inlet pressure and the turbine speed; and equating the pressure ratio and the function and recursively solving for the compressor inlet pressure.

An exhaust pipe is fixed to an internal combustion engine. A proximal end of a sensor guide is fixed to the exhaust pipe. A lead extends from an exhaust gas temperature sensor through the inside of the sensor guide to the outside of the sensor guide. The lead is fixed to a body of a vehicle outside the sensor guide. A distal end of the sensor guide is located forward of the proximal end.

A turbine housing includes an accommodation space that accommodates a turbine wheel, a discharge passage connected to the accommodation space, and a bypass passage that extends from the scroll passage bypassing the accommodation space and is connected to the discharge passage. The bypass passage extends so that an end surface on an upstream side of the catalytic device is located on a center axis of the bypass passage. An air-fuel ratio sensor is located closer to a center axis of the accommodation space than the center axis of the bypass passage. A protuberance that protrudes from an inner wall surface of the discharge passage is located between the accommodation space and the air-fuel ratio sensor. The protuberance protrudes toward the center axis of the accommodation space.

An exhaust purification device of a multi-cylinder engine which improves exhaust gas purification performance by substantially uniforming a flow rate of exhaust gas throughout a treatment carrier such as a catalyst and improving dispersibility of the exhaust gas from the multi-cylinder engine to the catalyst and other components in the exhaust purification device wherein two collecting pipes are arranged at substantially symmetric positions across a partition plate part, which has a linear cross sectional shape, and is arranged centrally between the pipes which are each formed into D-shaped cross sectional shapes and comprise a first straight line part, a pair of second straight line parts connected with respective ends of a first straight line part and arranged to be substantially parallel with each other, and a circular arc part that connects ends of a pair of second straight line parts on opposite sides of the first straight line part.

A system for monitoring the emissions performance of a vehicle by scanning an OBD system of the vehicle and transmitting the information to a hub. A determination is made whether the engine of the vehicle is in a non-compliant state. The non-compliant state including a failure of an oxygen sensor that causes a hub to control a refueling dispenser that presents a message confirming that the vehicle is in the non-compliant state on a display at the refueling dispenser and automatically levies a fine against the owner of the vehicle for being in the non-complaint state when the user or owner pays to refuel their vehicle. The fine is remitted to the regulating authorities.

An internal combustion engine-based system includes an internal combustion engine. The internal combustion engine-based system includes an engine interrupt connected to the engine. The engine interrupt is configured to selectively stop the operation of the engine. The internal combustion engine-based system includes a controller in communication with the engine interrupt. The internal combustion engine-based system includes a carbon monoxide detector in communication with the controller. The controller uses the engine interrupt to stop the operation of the engine when the carbon monoxide detector provides the controller with signals that are representative of a carbon monoxide level proximate the internal combustion engine that together form a trend of building carbon monoxide amounts over a set time interval.

The present invention is intended to, at the time of directly measuring a flow rate of exhaust gas flowing through an exhaust gas flow path and an air-fuel ratio of the exhaust gas, and on the basis of the flow rate and air-fuel ratio of the exhaust gas, calculating fuel consumption, reduce a measurement error of the fuel consumption. Also, the invention is a fuel consumption calculation unit that, with use of an exhaust gas flow rate obtained by a flow rate sensor provided in an exhaust gas flow path through which exhaust gas of an engine flows, and an air-fuel ratio obtained by an air-fuel ratio sensor provided in the exhaust gas flow path, calculates fuel consumption of the engine, and on the basis of the air-fuel ratio obtained by the air-fuel ratio sensor, changes a value of exhaust gas density used for the calculation of the fuel consumption.

A method for controlling a fill level of a catalytic converter that is in an exhaust aftertreatment system of an exhaust tract downstream from an internal combustion engine includes an exhaust gas sensor that is upstream of the catalytic converter measuring, and producing a signal representing, a concentration of an exhaust component; correcting a dynamic distortion present in the produced signal to produce a corrected signal; determining the fill level of the catalytic converter by inputting the corrected signal into a modeling function; and performing a control that modifies the fill level based on the determined fill level.