4 results about "Wide open throttle" patented technology

The control device of the internal combustion engine calculates the target rotational speed so that the target rotational speed increases as the engine coolant temperature decreases when the shutdown request of the internal combustion engine is detected. Next, racing is executed by the fuel injection is continuously executed until the engine rotational speed reaches the target rotational speed in a state where the throttle valve is fully opened. Further, the control device stops the fuel injection in a state where the throttle valve is fully opened when the engine rotational speed reaches the target rotational speed. When the output shaft of the internal combustion engine is rotated by inertia to scavenge the inside of the cylinder of the internal combustion engine, moisture generated on the inner wall of the cylinder can be blown off, so that occurrence of misfire can be suppressed.

A throttle valve arrangement for a handheld power tool, the throttle valve arrangement comprising a valve plate attached to a valve shaft, the valve shaft being arranged to rotate about a valve shaft axis from an idle throttle position to a wide open throttle, WOT, position, wherein the rotation of the valve shaft about the valve shaft axis is arranged to be biased towards a configurable valve shaft angle by a first actuator, wherein a second actuator of the throttle arrangement is arranged to resist rotation of the valve shaft about the valve shaft axis towards the WOT position, past an angle determined by a state of the second actuator.

Method for controlling an exhaust gas recirculation or EGR device in overload operation, wherein the method comprises the following steps: (a) Comparing a ratio of pressures at a front end and a rear end of a throttle valve (20) with a predetermined critical value which is a reference value for determining overload operation; (b) Performing a full-load or WOT (Wide Open Throttle) control to fully open the throttle valve (20) when the ratio of the pressures is greater than the predetermined critical value; (c) Determining whether engine torque meets a driver's torque requirement as a result of WOT control and the use of EGR, where whether the torque requirement is met is determined by comparing a torque loss due to a loss of intake air volume through the inflow of EGR gas with a torque increase due to an improvement in ignition efficiency through the inflow of EGR gas; and (d) Correcting the throttle opening or preventing the use of EGR, depending on whether the engine torque meets the torque requirement as a result of the use of EGR together with WOT control.

The invention belongs to the technical field of engine throttle valve control, and particularly relates to a throttle valve control method and system for reducing pumping loss of an engine. Comprising the following steps: setting an entering judgment condition in combination with an environment temperature, vehicle speed information, a throttle opening degree and an engine fuel injection quantity; when the entering judgment condition is met, a throttle valve full-open mode is entered, and a throttle valve of a vehicle engine is controlled to be fully opened; according to the external torque or rotating speed requirement, the accelerator opening degree and the difference value between the actual rotating speed of the engine and the oil supply recovery rotating speed, quit judgment conditions are set; and when the quit judgment condition is met, the throttle valve full-open mode is quitted, the throttle valve is controlled to quit the full-open state, and the target opening degree is returned. According to the invention, the judgment conditions for entering and exiting the full opening of the throttle valve are added, so that the time for the EMS to control the full opening of the throttle valve is more appropriate, the time point for exiting the full opening of the throttle valve is more accurate, and the repeated full opening condition is avoided.