Hitachi, Ltd.

Hitachi Automotive Systems Americas, Inc.

Donald James McCune

George Saikalis

Harsha Badarinarayan

Sujit S Phatak

Jonathan Borg

Shigeru Oho

Heming Chen

Takuya Shiraishi

Yosuke Tanabe

Yuan Xiao

Atsushi Watanabe

Can Wang

Pilar Hernandez Mesa

Makoto Ishikawa

Yasuhiro Ito

Hiroaki Saeki

Atsushi Hohkita

Masahiro Soma

Yasuo Sugure

Akira Inoue

Liang Shao

Takashi Yoshizawa

A system and method for allocating software resources. Multiple tasks are received from a network in which each task requires at least one software resource. Each task is analyzed to determine the type of resource(s) required to execute each such task. The availability of the software resource(s) is determined and, if available, allocated to the requesting task. If the software resource(s) is not available, the task is stored in a queue until the software resource(s) becomes available.

Virtual resource management tool for cloud computing service

A control system for a vehicle having a plurality of subsystems in which each subsystem includes a sensor and/or actuator. A general purpose processor is programmed with a plurality of software applications in which each software application is associated with one of the vehicle subsystems. The subsystems and processor communicate with each other through an electrical bus and each subsystem includes a communication interface to receive commands from the processor as well as to send task signals to the processor. A task arbitrator prioritizes the order of execution of multiple task signals received by the processor during a preset time period. The general purpose processor then initiates execution of the software application associated with the subsystem of the sensor signal received from the task arbitrator and thereafter transmits a control signal to one or more of the subsystems via the bus as a result of execution of the associated software application.

Control system for an automotive vehicle

A method for identifying a value of an unknown circuit component for an analog signal having a known output profile in which a simulation list of the analog circuit is first created including the component with the unknown value. A transfer function for the known output value is then created using a programmed processor and the transfer function is then solved by the processor for the value of the unknown component. For nonlinear circuit components, a linear model is substituted for the nonlinear components prior to creating the simulation list.

Method of identifying a value of an unknown circuit component in an analog circuit

A method and apparatus for controlling a solenoid actuated inlet valve to a pump chamber of a piston pump. A control circuit energizes the solenoid to open the inlet valve in synchronism with the reciprocation of the piston and thereafter de-energize the solenoid to initiate closure of the inlet valve. The inlet valve is decelerated following de-energization of the solenoid thus effectively reducing engine noise attributable to the inlet valve.

Method and apparatus for controlling a solenoid actuated inlet valve

A fuel delivery system for a direct injection internal combustion engine having two fuel rails and a plurality of fuel injectors attached to and fluidly connected with each fuel rail. A first fuel pump has its output connected with the first fuel rail while a second fuel pump has its output connected with the second fuel rail. A crossover pipe fluidly connects the outlets of both the first and second pumps. Both the first pump and the second pump each have an intake stroke and a pumping stroke. Furthermore, the intake stroke of the first pump coincides with the pumping stroke of the second pump and vice versa.

Fuel delivery system

A fuel delivery system for an internal combustion engine having a fuel pump with a high pressure outlet. A fuel rail defining an internal fuel chamber is fluidly connected to the fuel pump outlet. Additionally, at least two fuel injectors are fluidly connected to the fuel rail internal fuel chamber. At least one fluid check valve is fluidly positioned within the fuel rail in between two of the fuel injectors which reduces fuel pressure pulsations.

Fuel delivery system for an internal combustion engine

A method to reduce engine noise in a multi-cylinder direct injection internal combustion engine. The internal combustion engine includes a high pressure fuel pump having both an inlet valve fluidly connected to a fuel source and an outlet valve typically connected to a pressurized fuel rail. In order to reduce engine noise, especially at low engine speeds, the timing of the opening of either the fuel pump inlet valve or fuel pump outlet valve is varied so that it coincides with the opening of the fuel injectors.

Method and apparatus for reducing the number of separately distinguishable noise peaks in a direct injection engine

A method for the co-simulation of two or more interacting mathematical models in which each model has at least one input port and one output port for inputting and outputting values of parameters in a predefined parameter protocol. The unit of measurement is identified for each parameter in the model and a scaling factor is then generated to equalize the units of measurement for each parameter in each model. The parameter protocol for each port is then determined and a virtual bus with unique locations is configured for each parameter in the models. The parameters from the models are then configured as a function of the parameter protocol so that the same parameters from different models are associated with the same location in the virtual bus.

Method for co-simulation of two or more mathematical models

A method and apparatus for developing microcomputer-based systems. A controller model having at least one parameter is simulated and, similarly, a plant model having at least one parameter and controlled by the controller model is simulated. A user interface then has access to the parameters of the controller model and plant model and optionally suspends the execution of the controller model and plant model in response to a trigger event. The user interface determines the status of the controller model parameters and/or plant model parameters at the time of the trigger without altering the controller model parameters or plant model parameters or the program code of the controller model.

Method and apparatus for simulating microcomputer-based systems

A high pressure fuel pump for use with a direct injection engine having a housing which defines a pump chamber. A port is formed in the housing which fluidly connects a fuel in the passageway with the pump chamber. An elongated valve is movably mounted within the housing between an open and a closed position. In its open position, the inlet passageway is fluidly connected with the pump chamber while, conversely, in the closed position the fuel valve blocks the fluid flow between the inlet passageway and the pump chamber. A circuit controls the deceleration of the valve to reduce pump noise.

Fuel pump

A method and apparatus for developing multicore microcomputer-based systems. A dual core controller model having at least one parameter is simulated and, similarly, a plant model having at least one parameter and controlled by the controller model is also simulated. The user interface then has access to the parameters of the controller model and plant model and optionally suspends execution of the controller model and plant model in response to a trigger event. The user interface determines the status of the various controller model parameters for both cores and/or plant model parameters at the time of the trigger without altering the controller model parameters or the plant model parameters. The core parameters for both cores are displayed on a display device.

Apparatus and method to develop multi-core microcomputer-based systems

A fuel pump for a direct injection internal combustion engine having a body with a valve seat. The valve includes a valve head and the valve is movably mounted to the body between an open position and a closed position. In its open position, the valve head is spaced from the valve seat white in its closed position, the valve head abuts against the valve seat and closes the valve. An electric coil upon energization moves the valve to an open position and, conversely, upon deenergization allows the valve to move to a closed position. A control circuit controls the energization of the coil to reduce the pump noise during operation of the engine, especially at low speeds.

Fuel pump control for a direct injection internal combustion engine

A method and apparatus for attenuating fuel pump noise in a direct injection internal combustion engine. In one proposal, the direct injection fuel nozzle is suspended from a fuel rail in a fashion that avoids direct metal-to-metal contact between the injector and the engine block. The direct injection nozzle may also be connected to the fuel rail by a pair of spaced-apart seals which equalize the longitudinal pressure on the nozzle during operation. Enlarged diameter fuel reservoirs and/or a restricted orifice may be provided fluidly in series between the fuel pump and the direct injection nozzle in order to attenuate noise resulting from fuel pump pulsation.

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Farmington Hills, MI, United States of America

Donald James McCune