US 12,359,640 B2
Engine control device and engine control method
Kengo Tanaka, Tokyo (JP); Yusuke Imamori, Tokyo (JP); Sota Watanabe, Sagamihara (JP); and Taro Tamura, Sagamihara (JP)
Assigned to MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD., Sagamihara (JP)
Appl. No. 18/707,624
Filed by MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD., Sagamihara (JP)
PCT Filed Oct. 19, 2022, PCT No. PCT/JP2022/038870
§ 371(c)(1), (2) Date May 6, 2024,
PCT Pub. No. WO2023/085018, PCT Pub. Date May 19, 2023.
Claims priority of application No. 2021-183714 (JP), filed on Nov. 10, 2021.
Prior Publication US 2025/0003373 A1, Jan. 2, 2025
Int. Cl. F02D 41/40 (2006.01); F02D 41/00 (2006.01)
CPC F02D 41/401 (2013.01) [F02D 41/0097 (2013.01); F02D 2200/0406 (2013.01); F02D 2200/0614 (2013.01); F02D 2200/101 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An engine control device for controlling an engine with a turbocharger, the device comprising:
a rotation speed increase mode execution unit configured to execute a rotation speed increase mode which is a mode for increasing a rotation speed of the engine while operating the engine with no load;
a high-idle mode execution unit configured to execute a high-idle mode for operating the engine with no load, which is different from the rotation speed increase mode, when a first parameter relating to an operation state of the engine reaches a threshold value in the rotation speed increase mode; and
a load application mode execution unit configured to execute a load application mode which is a mode for applying a load to the engine, after the high-idle mode is executed,
wherein the rotation speed increase mode includes at least one stage of fuel injection in one combustion cycle of the engine,
the high-idle mode includes at least two stages of fuel injection in the one combustion cycle of the engine, and
the high-idle mode execution unit is configured to retard a timing of second stage fuel injection in the one combustion cycle of the engine in the high-idle mode, relative to a timing of first stage fuel injection in the one combustion cycle of the engine in the rotation speed increase mode.