US 12,297,789 B2
Engine control device, engine control method, and program
Naoki Hashimoto, Sagamihara (JP); Ko Takayanagi, Tokyo (JP); Masataka Shiraishi, Sagamihara (JP); Yuta Furukawa, Sagamihara (JP); Yosuke Kitamura, Sagamihara (JP); and Yuki Koyama, Sagamihara (JP)
Assigned to MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD., Sagamihara (JP)
Appl. No. 18/276,421
Filed by MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD., Sagamihara (JP)
PCT Filed Dec. 2, 2021, PCT No. PCT/JP2021/044290
§ 371(c)(1), (2) Date Oct. 2, 2023,
PCT Pub. No. WO2022/172559, PCT Pub. Date Aug. 18, 2022.
Claims priority of application No. 2021-020659 (JP), filed on Feb. 12, 2021.
Prior Publication US 2024/0110532 A1, Apr. 4, 2024
Int. Cl. F02D 41/14 (2006.01); F02D 41/00 (2006.01)
CPC F02D 41/1495 (2013.01) [F02D 41/0007 (2013.01); F02D 41/1446 (2013.01); F02D 41/0027 (2013.01); F02D 2200/0406 (2013.01); F02D 2200/0411 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An engine control device for controlling an opening degree of a valve adjusting a flow rate of an air-fuel mixture of an engine,
wherein the opening degree is corrected based on an exhaust temperature deviation which is a deviation between a reference value and a current value of an exhaust temperature when controlling the opening degree,
wherein the engine control device further comprising a volumetric efficiency deterioration degree calculation unit which calculates a volumetric efficiency deterioration degree based on the exhaust temperature deviation and a load of the engine,
wherein the opening degree is corrected based on the volumetric efficiency deterioration degree, and
wherein the engine control device further comprising a deterioration degree holding determination unit which determines whether or not the load varies and holds the volumetric efficiency deterioration degree at a value before variation when the load varies.