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US 2023/0228303 A1Published application
Methods And Systems For Improving The Operation Of Transmissions For Motor Vehicles
AssigneeTransgo, LLC
InventorDavid A. Hardin
Life of this patent
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AssigneeTransgo, LLC
InventorDavid A. Hardin
Estimating the term…
The hydraulic circuitry of a factory installed automatic automotive transmission is modified to include a check ball and spring to limit balance oil to a predetermined pressure applied to first end of the clutch regulator valve. When the onboard automobile computer ramps up solenoid oil pressure applied to the clutch regulator valve through a gain valve that acts on a first end of the clutch regulator valve, this pressure is opposed by a spring as well as clutch balance oil pressure that is routed and applied to a second opposite end of the clutch regulator valve. The arrangement limits the balance oil pressure applied to the second end of the clutch regulator valve to a predetermined maximum value so the onboard computer regulates the clutch up to that predetermined value. When the pressure/force applied to the second end of the clutch regulator valve exceeds the predetermined maximum value, a check ball disposed at the second end of the clutch regulator valve, held in place by a spring, is displaced and unseated from a seat in a valve bore, resulting in the exhaust or leaking of the balance oil applied to the second end of the clutch regulator valve so that the oil pressure applied to the first end of the clutch regulator valve is no longer opposed by the balance oil applied to the second end of the clutch regulator valve, thereby enabling the clutch regulator valve to quickly move in a direction to complete the shift and to hold added engine power during the shift.
In an hydraulic circuit for an automatic automotive transmission including a clutch regulator valve, means for applying oil pressure to a first end of said clutch regulator valve to move said clutch regulator valve in a first direction, and means for applying oil pressure to a second end of said clutch regulator valve to move said clutch regulator valve in a second direction opposite to said first direction, the improvement comprising:
A method of modifying an automatic automotive transmission having a clutch regulator valve, means for applying oil pressure to a first end of said clutch regulator valve to move said clutch regulator valve in a first direction, and means for applying oil pressure to a second end of said clutch regulator valve to move said clutch regulator valve in a second direction opposite to said first direction, the steps of said method including:
The method as claimed in claim 8. wherein the step of limiting the oil pressure applied to the second end of said clutch regulator valve to a predetermined maximum oil pressure includes the step of providing a check ball seated in a seat at the second end of said clutch regulator valve.
The method as claimed in c aim 12 including the further step of exhausting oil applied to said second end of said clutch regulator valve when said oil pressure applied to the second end of said clutch regulator valve exceeds said predetermined maximum oil pressure.
An hydraulic circuit for an automatic automotive transmission including a clutch regulator valve, means for applying oil pressure to a first end of said clutch regulator valve to move said clutch regulator valve in a first direction, means for applying oil pressure to a second end of said clutch regulator valve to move said clutch regulator valve in a second direction opposite to said first direction, and means for limiting the oil pressure applied to the second end of said clutch regulator valve to a predetermined maximum oil pressure.
Dependencies are inferred from the claim text.