6results about "Analogue computers for vehicles" patented technology

A valve timing control device includes: a unit for calculating a target valve timing for one of an intake valve and an exhaust valve in accordance with an operational state; a unit for detecting an actual valve timing of one of the intake valve and the exhaust valve; an actual valve timing control unit for generating a controlled variable for the VVT based on a difference between the target valve timing and the actual valve timing; a unit for learning a learning value of the controlled variable required for maintenance of the actual valve timing based on an integral correction value; and a unit for detecting a malfunction in a VVT from an amount of a shift in the actual valve timing when learning is not completed yet, and for detecting a malfunction in the VVT from the difference when learning is already completed.

An acceleration-pedal control method, apparatus and system are provided. The acceleration-pedal control method comprises: acquiring an accelerator torques MAP1, MAP2, MAP3 and MAP4; on the basis that the initial value of a counter is 0 and a vehicle speed meets a preset vehicle speed condition, the counter starting to count; controlling an acceleration pedal to operate according to an accelerator torque MAP0 in case of the counter value of 0, according to the accelerator torque MAP1 in case of the counter value of 1, according to the accelerator torque MAP2 in case of the counter value of 2, according to the accelerator torque MAP3 in case of the counter value of 3, and according to the accelerator torque MAP4 in case of the counter value of 4.

A transport vehicle (1) comprising: —a heat engine (8) operable at a number of revolutions varying between a minimum number and a maximum number; —an adjusting device (52) configured to adjust an infeed flow of air-fuel mixture to the heat engine (8); —at least one on-board memory unit (61) in which an acoustic emission map (70) of the transport vehicle (1) is stored, wherein for each data pair comprising a first data item correlated to an operating condition of the adjusting device (52) and a second data item correlated to the number of engine revolutions, the acoustic emission map (70) associates, as a function of the first data item and as a function of the second data item, a third data item correlated to an acoustic emission measurement by at least one acoustic sensor (S1) external to the transport vehicle (1) and arranged at a separation distance from the transport vehicle (1).

A method for monitoring a rotating machine in order to detect a fault in a bearing, the method including acquiring, from the rotating machine, a vibration signal measured by a vibration sensor; determining a first-order spectrogram by first-order cyclostationary analysis of the vibration signal using a delta transform and spectral standardisation; determining a second-order spectrogram by second-order cyclostationary analysis of the vibration signal using averaged cyclic coherence, a delta transform and spectral standardisation; and detecting a vibration signature of the fault in the bearing on the basis of the first-order spectrogram and the second-order spectrogram.

A method of operating a fuel injection system of an internal combustion engine comprising at least one fuel injector associated with a combustion chamber and coupled to a fuel rail comprising a pressure sensor. The method comprises applying to the injector a drive signal of predetermined length; and a pressure drop analysis, PDA, strategy is operated, by which an injected fuel quantity corresponding to a given injection event is determined from a mapping based on a rail pressure drop corresponding to the given injection event. Rail pressure data are acquired by the pressure sensor during an analysis window encompassing the given injection event. In the method, the rail pressure data are processed in order to cancel predetermined artefacts of known intensity and timing due to the injection system and intervening in the analysis window, whereby corrected pressure data are obtained; and the PDA strategy is operated based on a pressure drop calculated from the corrected rail pressure data.

In a method and device for automatically controlling vehicle start-up based on a driver's intention and a vehicle's control state, the method for automatically controlling vehicle start-up may include checking setting of a vehicle start-up automatic control mode, when the vehicle start-up automatic control mode is activated, determining whether an operation condition of the vehicle start-up automatic control mode is satisfied, when the operation condition is satisfied, determining a first control condition for automatically starting the vehicle's start-up, and when the first control condition is satisfied, transmitting a first start-up control signal for automatically starting the vehicle's start-up to a vehicle control unit (VCU).