Engine, vehicle and engine control method
AssigneeSuzuki Motor Corporation
InventorYoshinari Ninomiya
Life of this patent
Estimating the term…
Abstract
An engine includes: an engine main body including a plurality of cylinders; a plurality of throttle valves positioned on intake sides of the plurality of cylinders; and a controller configured to control opening and closing operation of the plurality of throttle valves. Output of a part of the plurality of cylinders is larger than output of rest of the plurality of cylinders. And the controller opens a part of the throttle valves upstream of the part of the plurality of cylinders at a lower speed than rest of the throttle valves upstream of the rest of the plurality of cylinders.
Claims9
An engine comprising:
- an engine main body including a plurality of cylinders;
- a plurality of throttle valves positioned on intake sides of the plurality of cylinders;
- and
- a controller configured to control opening and closing operation of the plurality of throttle valves,
- wherein output of a part of the plurality of cylinders is larger than output of rest of the plurality of cylinders,
- wherein the controller opens a part of the throttle valves upstream of the part of the plurality of cylinders at a lower speed than rest of the throttle valves upstream of the rest of the plurality of cylinders,
- wherein the controller estimates output of the plurality of cylinders and determines whether output deviation of the plurality of cylinders falls within a predetermined range,
- wherein the controller opens the part of the throttle valves at a lower speed than the rest of the throttle valves until the output deviation of the plurality of cylinders falls within the predetermined range, and
- wherein, after the output deviation of the plurality of cylinders has fallen within the predetermined range, the controller opens the part of the throttle valves at a higher speed than the rest of the throttle valves until an opening degree of the part of the throttle valves matches an opening degree of the rest of the throttle valves.
A method for controlling an engine including an engine main body including a plurality of cylinders, a plurality of throttle valves positioned on intake sides of the plurality of cylinders, and a controller configured to control opening and closing operation of the plurality of throttle valves, output of a part of the plurality of cylinders being larger than output of rest of the plurality of cylinders, the method comprising:
- a determining step of determining whether an excessive acceleration response is indicated for throttle operation by the controller;
- an opening step of opening a part of the throttle valves upstream of the part of the plurality of cylinders at a lower speed than rest of the throttle valves upstream of the rest of the plurality of cylinders when determining that the excessive acceleration response is indicated by the controller;
- and
- a step of estimating output of the plurality of cylinders and determining whether an output deviation of the plurality of cylinders falls within a predetermined range by the controller,
- wherein, in the opening step, the part of the throttle valves is opened at a lower speed than the rest of the throttle valves by the controller until the output deviation of the plurality of cylinders falls within the predetermined range, and
- wherein, after the output deviation of the plurality of cylinders has fallen within the predetermined range, the part of the throttle valves is opened at a higher speed than the rest of the throttle valves by the controller until an opening degree of the part of the throttle valves matches an opening degree of the rest of the throttle valves.
Dependencies are inferred from the claim text.