Back to results
US 4,815,340 AGranted
Device for controlling engine torque in vehicle
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsKunihiro Iwatsuki, Yoshio Shindo
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsKunihiro Iwatsuki, Yoshio Shindo
Estimating the term…
A device for controlling engine torque in a vehicle which includes an engine and an automatic transmission, and for changing the engine torque during shifting of the automatic transmission by an engine torque change value determined in association with at least engine load. The device includes a detecting device for detecting at least one of intake air pressure, cooling water temperature of an engine, oil temperture of an engine, and oil temperature in a hydraulic control device of the automatic transmission; a determining device for determining the engine torque change value in further association with at least one of the intake air pressure, the cooling water temperature of the engine, the oil temperature of the engine, and the oil temperature in the hydraulic control device of the automatic transmission; and a changing device for changing engine torque during-shifting of the automatic transmission by the determined engine torque change value. With the engine torque controlling device, satisfactory shift characteristics can be constantly obtained irrespective of the influence of enviromental factors on either engine output or the behavior of a hydraulic control device of the automatic transmission, so that shift shock can be decreased and the durability of the frictionally engaging devices can be improved.
A device for controlling engine torque in a vehicle which includes an engine and an automatic transmission, and for changing said engine torque during shifting of said automatic transmission by an engine torque change value determined in association with at least engine load, said device comprising:
A device for controlling engine torque in a vehicle which includes an engine and an automatic transmission, and for changing said engine torque during shifting of said automatic transmission by an engine torque change value determined in association with at least engine load, said device comprising:
A device for controlling engine torque in a vehicle which includes an engine and an automatic transmission, and for changing said engine torque during shifting of said automatic transmission by an engine torque change value determined in association with at least engine load, said device comprising:
Dependencies are inferred from the claim text.