US 12,221,936 B2
Diesel engine, diesel engine manufacturing method, and diesel engine injection-amount correction system
Yasushi Kobayashi, Sakai (JP); Hiroki Oso, Sakai (JP); Kiichi Suehiro, Sakai (JP); Yuki Tagashira, Sakai (JP); and Koji Nakakita, Sakai (JP)
Assigned to KUBOTA CORPORATION, Osaka (JP)
Appl. No. 18/565,224
Filed by KUBOTA CORPORATION, Osaka (JP)
PCT Filed Feb. 21, 2022, PCT No. PCT/JP2022/007026
§ 371(c)(1), (2) Date Nov. 29, 2023,
PCT Pub. No. WO2023/026518, PCT Pub. Date Mar. 2, 2023.
Claims priority of application No. 2021-139050 (JP), filed on Aug. 27, 2021.
Prior Publication US 2024/0254940 A1, Aug. 1, 2024
Int. Cl. F02D 41/40 (2006.01); F02D 41/20 (2006.01)
CPC F02D 41/406 (2013.01) [F02D 2041/2058 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A diesel engine comprising:
an injector that uses a solenoid to directly drive a needle valve and inject a fuel; and
an injector control device that controls the driving by the injector,
the injector control device including:
a charge voltage control circuit that stores an electric energy in a capacitor on the basis of a voltage supplied from a battery;
a storage unit that stores a correction value related to an injection amount of the fuel injected from the injector; and
an injector control circuit that controls the driving by the injector on the basis of each of a voltage supplied from the charge voltage control circuit and the correction value stored in the storage unit,
the correction value being set according to a voltage applied to a terminal of the injector control device connected to a load when a current starts to flow in the load connected to the injector control device, wherein
the voltage applied to the terminal is measured by a voltage measurement device in a production process, and
the correction value is set according to the voltage measured by the voltage measurement device and stored in the storage unit in the production process.