US 12,378,928 B2
Engine control device, engine control system, and engine control program
Ko Takayanagi, Sagamihara (JP); Yosuke Kitamura, Sagamihara (JP); Takayoshi Kuramoto, Sagamihara (JP); and Ryo Sase, Tokyo (JP)
Assigned to MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD., Sagamihara (JP)
Appl. No. 18/728,400
Filed by MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD., Sagamihara (JP)
PCT Filed Jan. 20, 2023, PCT No. PCT/JP2023/001609
§ 371(c)(1), (2) Date Jul. 11, 2024,
PCT Pub. No. WO2023/145622, PCT Pub. Date Aug. 3, 2023.
Claims priority of application No. 2022-010354 (JP), filed on Jan. 26, 2022.
Prior Publication US 2025/0154919 A1, May 15, 2025
Int. Cl. B60T 7/12 (2006.01); F02D 41/00 (2006.01); F02D 41/14 (2006.01); F02D 41/40 (2006.01); F02D 29/06 (2006.01)
CPC F02D 41/401 (2013.01) [F02D 41/0097 (2013.01); F02D 41/1401 (2013.01); F02D 29/06 (2013.01); F02D 2041/1409 (2013.01); F02D 2041/141 (2013.01); F02D 2200/1002 (2013.01); F02D 2200/101 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An engine control device, comprising:
an injection command unit for outputting a fuel injection amount command value indicating a fuel injection amount supplied to an engine;
a first calculation unit for outputting a fuel injection amount obtained by feedback calculation based on an engine speed deviation which is a deviation between an actual engine speed and a target engine speed of the engine to the injection command unit as a basic fuel injection amount;
a second calculation unit for outputting a fuel injection amount obtained by feedforward calculation based on an engine load at present of the engine to the injection command unit as a feedforward fuel injection amount; and
a first determination unit for determining whether a load application state has occurred in which the engine load before a prescribed time, which is not greater than a prescribed value, increases by not less than a variation threshold,
wherein the engine control device is configured to switch from a normal control mode where the injection command unit outputs, as the fuel injection amount command value, a first fuel injection amount calculated based on the basic fuel injection amount to a load application control mode where the injection command unit outputs, as the fuel injection amount command value, a second fuel injection amount calculated based on a value obtained by adding the feedforward fuel injection amount to the basic fuel injection amount, if the first determination unit determines that the load application state has occurred.