The present invention pertains to a method for controlling operation of an internal combustion engine configured to run on a fuel mixture of hydrogen and natural gas. The method comprises a step of obtaining temperature values measured by at least one temperature sensor provided in a cylinder head of the engine; and a step of controlling operation of the engine in dependence on the temperature values.

A method of operating a forced induction gaseous-fueled engine includes mixing gaseous-fuel and engine intake air to form a mixture at a fuel mixer. The method includes delivering the mixture to an intake manifold by at least partially bypassing a charge air cooler.

An intelligent fuel storage system can consist of a storage pod connected to a storage module with the storage pod having a plurality of separate storage vessels each residing below a ground level. The storage pod may concurrently store a first volume of a first fuel and a second volume of a second fuel prior to altering the first and second volumes in accordance with a performance strategy generated by the storage module to provide a predetermined blend of the first fuel and second fuel with at least a threshold volume and at least a threshold pressure.

Disclosed is a method for estimating an angular position of top dead center for a high-pressure fuel injection pump that forms part of a system for injecting fuel into a motor vehicle engine, the pump including at least one piston moving in a chamber between the top and the bottom dead center, the pump being equipped with a digital control valve for controlling a quantity of fuel, an electrical current being applied to the digital valve as it closes then removed in order to open the digital valve, a movement of the digital valve in the direction of opening creating an induced current which makes it possible to detect a position of start-of-opening of the digital valve. An instant at which the pump piston passes through top dead center is estimated as a function of an instant at which the position of start-of-opening of the digital valve appears.

A system for determining properties of fuel supplied to an internal combustion (IC) engine and for adjusting operations of the IC engine based on the determined properties. The system includes an air-flow throttle configured to control the air supplied to the IC engine; a fuel-flow throttle configured to control the fuel supplied to the IC engine; and an engine control module (ECM) configured to receive readings from and control operation of the throttles. The ECM is configured to perform a fuel-air determination program where the ECM determines a percent-error air-to-fuel ratio (AF) based on a true AF ratio compared to an ideal AF ratio. The ECM is configured to perform a fuel property determination and adjustment program in which the ECM is configured to adjust operations of the IC engine based on a fuel property value determined using the percent-error AF ratio.

Nonwoven abrasive articles comprise a nonwoven abrasive member having an overlayer composition comprising a fatty acid metal salt disposed thereon adjacent to a working surface. The nonwoven abrasive member comprises abrasive particles adhered to a fiber web by a binder. The abrasive particles may be exposed and/or the nonwoven abrasive member may have suitable frictional properties. Methods of making the same are also disclosed.

Method and apparatus for blending first and second fuels for use by a combustion mechanism, such as a motor vehicle. The first and second fuels are stored in storage vessels of a fuel storage pod in a fuel storage ratio of total respective volumes established by a storage controller circuit of a storage module responsive to a predicted demand level. A blended fuel ratio is selected by a blend controller circuit of a blend module in response to an imminent demand parameter of a selected combustion mechanism, with the blended fuel ratio being different from the fuel storage ratio. A blend of the first and second fuels is thereafter dispensed to the selected combustion mechanism at the blended fuel ratio. The first fuel may be hydrogen (H2), and the second fuel may be a selected hydrocarbon, such as propane, butane, methane, hexane, gasoline or diesel.

Method and apparatus for adaptively adjusting the storage of fuels for use in a fuel blending process. First and second fuels are stored in storage vessels at an initial volumetric fuel storage ratio. A storage controller executes a performance strategy to adaptively adjust at least one storage parameter in response to a predicted or detected change in operating conditions of the system. The performance strategy can include increasing a storage pressure of at least one of the fuels and/or changing a total number of storage vessels used to store the respective fuels. A dispensing mechanism transfers a blended fuel formed from the first and second fuels in accordance with the execution of the performance strategy. The fuels can take a variety of forms including hydrogen (H2), oxygen (O2), hydrocarbons, etc. The blended fuel may be dispensed by a fueling station to a motor vehicle.

A method of operating a forced induction gaseous-fueled engine includes mixing gaseous-fuel and engine intake air to form a mixture at a fuel mixer. The method includes delivering the mixture to an intake manifold by at least partially bypassing a charge air cooler.

The present disclosure relation relates to a system and method for controlling a gas engine, wherein the gas engine is supplied with a fuel gas which consists of different molecules and which is stored in at least a gaseous phase and a liquid phase in a gas storage device. The system comprises means for determining from which of its liquid or gaseous phase the fuel gas is taken out of the gas storage device. The system further comprises means for adapting the control of the gas engine in case it is determined that the phase from which the fuel gas is taken out of the gas storage device has changed.