6 results about "Otto cycle" patented technology

Vehicular engine system (1) for a vehicle comprising an otto cycle engine (2), an air intake (3), compressor means (4) and an ATS, after treatment system, system (10), said air intake (3) allowing air to be sucked from the environment by said compressor means (4), said engine (2) providing as outlet an exhaust flow, said exhaust flow being discharge in the environment by passing through said ATS system (10), the ATS system comprising a plurality of operative modules (11, 12, 13, 14) fluidically in series one with respect to the other, said vehicular engine system (1) comprising a bypass system (30) configured to spill a portion of the compressed air downstream of said compressor means (4) and provide this spilled portion to at least one (14) among said operative modules (11, 12, 13, 14) in order to optimize the temperature and / or oxygen level of the exhaust flow before entering into such at least one (14) among said operative modules (11, 12, 13, 14), wherein the ATS system (10) comprises in fluidic series one to the other the below operative modules: · A first TWC (Three-way catalyst) (11); · A second TWC, (12) coupled to a CPF (Catalyzed Particulate Filter) (13); and · An ASC (Ammonia Slip Catalyst) or CUC (Clean-up catalyst system) (14). wherein said bypass system (30) provides said spilled air flow to said ASC / CUC (14).

Method for correcting a measurement of an air flow rate passing through a throttle valve (TV) of an Otto cycle internal combustion engine (E), carried out by means of a mass air flow sensor (MAF), the engine (E) comprising an intake manifold (IM) on which is arranged: the throttle valve (TV), the mass air flow sensor (MAF), upstream of the throttle valve, a first pressure sensor (PU) and a second pressure sensor (PD) arranged respectively upstream and downstream of the throttle valve (TV), a temperature sensor (TU) arranged upstream of the throttle valve (TV), wherein the mass air flow sensor (MAP) is arranged between said temperature sensor (TU) and the throttle valve (TV), the method comprising the implementation, by means of a processing unit (ECU), of a Luemberger observer (OBS) to calculate a signal (xk) representative of the mass air flow rate passing through the throttle valve, wherein the observer is configured to simultaneously acquire at the input a first signal (eyk), a function of a second signal (x̃k) generated by the mass air flow sensor (MAP) and a third signal (ϕthrk), calculated by means of a throttle valve outflow model, representative of said mass air flow passing through the throttle valve.

The invention involves a system and method for providing a liquid fuel or a liquid and gaseous fuel to a diesel cycle or Otto cycle engine for operation of the engine. The system includes a primary electronic control module (ECM) which monitors engine sensors and contains least one three-dimensional (3D) fuel map for the liquid fuel and one for gaseous fuel. A gaseous fuel injection assembly is provided for the injection of the gaseous fuel to the engine. The gaseous fuel is transported on the vehicle in a liquid form and converted to a gaseous fuel via a fuel phase converter utilizing the air being drawn into the engine by the combustion process. The liquid fuel is warmed while the incoming air is cooled to increase air density of the air being drawn into the engine, thereby increasing engine performance and lowering the emissions output of the engine.

The floating body is provided with: a floating body main body; the Otto cycle engine is arranged on the floating body main body; the natural gas tank is arranged on the floating body main body and can store natural gas; a fuel supply line for supplying natural gas from the natural gas tank to the Otto cycle engine; and a methane value improving unit provided in the floating body main body and supplying at least one of carbon dioxide and nitrogen to the natural gas supplied to the Otto cycle engine.

The invention involves a system and method for providing a liquid fuel or a liquid and gaseous fuel to a diesel cycle or Otto cycle engine for operation of the engine. The system includes a primary electronic control module (ECM) which monitors engine sensors and contains at least one three-dimensional (3D) fuel map for the liquid fuel and one for gaseous fuel. A gaseous fuel injection assembly is provided for the injection of the gaseous fuel to the engine. The gaseous fuel is transported on the vehicle in a liquid form and converted to a gaseous fuel via a fuel phase converter utilizing the air being drawn into the engine by the combustion process. The liquid fuel is warmed while the incoming air is cooled to increase air density of the air being drawn into the engine, thereby increasing engine performance and lowering the emissions output of the engine.

Method of controlling a pressure in an intake manifold (IT) of an Otto cycle internal combustion (E) engine, equipped with a throttle valve (TH) and an electric actuator (Act) arranged to control a target position (αdes) of a shutter (SH) of the butterfly valve and a pressure sensor (Sns), the method comprising a control procedure (CTRL) of the actuator as a function of a first pressure error between a value of target pressure ( Pd.es ) and an estimated pressure value (Pcalc), in which the estimate of the estimated pressure value (Pcalc) is a function of a second error (Ectrl) between an average value (Pmeas_filt) of the measured pressure and an average value ( Pcalc_filt) of the estimate (Pcalc) of the pressure value.