An engine control method for a vehicle may include a temperature securing determination step of determining, by a controller, whether an exhaust gas temperature before a turbine of a turbocharger is normally secured; a basic determination step of, when the exhaust gas temperature before the turbine is normally secured, obtaining, by the controller, a first compensation torque according to a current state of the vehicle from a first compensation torque map according to the exhaust gas temperature before the turbine, an engine operation mode, engine speed, and atmospheric pressure; and an engine control step of, when the exhaust gas temperature before the turbine is normally secured, determining, by the controller, a final compensation torque on the basis of the first compensation torque and controlling engine torque at a value which is obtained by subtracting the final compensation torque from engine full-load torque.

An angle detection mechanism to detect a rotation angle of a rotation body includes a first detection unit to cause a first output value to constantly change in response to an angle change of the rotation body in the entire region of a specific rotation range and to set a change quantity of the first output value relative to the angle change in a first rotation region of the specific rotation range to be greater than a change quantity in a non-first rotation region, and a second detection unit to cause a second output value to constantly change in response to an angle change and to set a change quantity of the second output value in a second rotation region including a rotation region different from the first rotation region to be greater than a change quantity in a non-second rotation region.

A system for controlling a throttle signal, as well as methods of assembling the same, is provided. Controlling the throttle signal includes activating a supply of power to an electronic control unit (ECU). A first throttle signal associated with a throttle position signal of a vehicle throttle is communicated. An initial gear state of the vehicle is determined. Based on the initial gear state of the vehicle, a modified throttle signal to the ECU is communicated in response to receiving a command signal. Based on determining a change in the gear state of the vehicle, terminating the communication of the modified throttle signal. A second throttle signal that is associated with a second throttle position signal of the vehicle throttle is communicated.

A control arithmetic unit uses a control storage area and computes a target control amount for combustion of an internal combustion engine according to a user required torque. A monitoring arithmetic unit uses a monitoring storage area and performs computation and monitoring of presence or absence of a torque anomaly state in which an estimated torque is deviated from an engine required torque by a predetermined amount or more. The monitoring arithmetic unit includes an engine required torque computation unit that computes the engine required torque and an estimated torque computation unit that computes the estimated torque. The engine required torque computation unit computes a reduction in an actual torque, which is caused in conjunction with a retard in ignition timing of the internal combustion engine, as a reserve torque and computes the engine required torque based on the calculated reserve torque and the user required torque.

The present disclosure relates to an engine in which compression and expansion is performed in the same cylinder. Also disclosed is a microprocessor for controlling the state of various valves in the cylinderincluding an intake valve, a transfer valve, and an exhaust valveto cause a compression or expansion to occur. A compression tank is provided for receiving, via the transfer valve, compressed air, which may be retrieved during an expansion (combustion) cycle. Compressed air for from multiple consecutive compressions may be stored in the tank and retrieved later, including for multiple consecutive expansions. Compression and expansion are not required to occur in any fixed or predetermined pattern and the microprocessor may evaluate vehicle sensors to determine a power demand, and cause compression or expansion to occur depending on the given power demand.

An engine control method for a vehicle may include a temperature securing determination step of determining, by a controller, whether an exhaust gas temperature before a turbine of a turbocharger is normally secured; a basic determination step of, when the exhaust gas temperature before the turbine is normally secured, obtaining, by the controller, a first compensation torque according to a current state of the vehicle from a first compensation torque map according to the exhaust gas temperature before the turbine, an engine operation mode, engine speed, and atmospheric pressure; and an engine control step of, when the exhaust gas temperature before the turbine is normally secured, determining, by the controller, a final compensation torque on the basis of the first compensation torque and controlling engine torque at a value which is obtained by subtracting the final compensation torque from engine full-load torque.

A failure diagnosis method for power train components may include: establishing, by a server, a diagnosis model based on vibration big data indicative of failure of power train components; classifying and modeling, by the server, failed components among the power train components by using feature vectors extracted from the vibration big data; initiating, by a controller of a vehicle, failure diagnosis on power train components of the vehicle by an input command or setting of a driver; and diagnosing, by the controller of the vehicle, a failure of the power train components of the vehicle by comparing a feature vector corresponding to the power train vibration of the vehicle measured during the vehicle travels with the vibration big data modeled in the diagnosis model.

An accelerator position detection device facilitates detection of a neutral position of a handlebar grip turnable in not only a positive direction but in a negative direction from the neutral position. In the accelerator position detection device provided with a detector that outputs voltage according to an angle of the handlebar grip and detects an angle for control for controlling a vehicle based upon the angle of the handlebar grip on the basis of the output of a first sensor and a second sensor, the first sensor is configured so that the first sensor outputs first voltage rising in volume from a position exceeding a first rise start angle located in a normal rotation direction by predetermined quantity from the neutral position in the normal rotation direction, and the second sensor is configured so that the second sensor outputs second voltage rising in volume from a position exceeding a second rise start angle located in a reverse rotation direction by predetermined quantity from the neutral position in the normal rotation direction.

Systems and methods for operating an engine in response to a condition of an engine air intake throttle being degraded are presented. In one example, the engine air intake throttle is held closed while a position of a fuel vapor storage canister vent valve is adjusted to control air flow into the engine based on a position of an accelerator pedal. In this way, the engine air amount may be adjusted to provide additional torque from an engine while a throttle is degraded.

A method for diagnosing a waste gate valve malfunction in a power generation system is presented. The method includes determining an actual pressure differential across a throttle valve. The method further includes determining an estimated pressure differential across the throttle valve based on one or more first operating parameters of the power generation system. Furthermore, the method includes determining an absolute difference between the actual pressure differential and the estimated pressure differential. Moreover, the method also includes comparing the absolute difference with a threshold value and if the absolute difference is greater than the threshold value, determining an operating condition of the throttle valve. Additionally, the method includes determining whether the waste gate valve has malfunctioned based on the determined operating condition of the throttle valve. An engine controller and a power generation system employing the method are also presented.