Pramod K Jain

Address:

36117 Fredericksburg Rd, Farmington Hills, MI 48331

Phone:

2485534667

VIN:

JTHBK1EG5C2499125

Make:

LEXUS

Model:

ES 350

Year:

2012

US Patent:

6385520, May 7, 2002

Filed:

Aug 10, 2000

Appl. No.:

09/636729

Inventors:

Pramod K. Jain - Farmington Hills MI
Howard Cecil Kuhn - Farmington Hills MI
Ronald Thomas Cowan - Rochester Hills MI
Bradley Dean Riedle - Northville MI
Chuanchi Steve Tang - Troy MI
James M. Merner - Canton MI

Assignee:

Ford Global Technologies, Inc. - Dearborn MI

International Classification:

G06F 1700

US Classification:

701 51, 701 58

Abstract:

A control strategy and method for controlling application and release of friction elements in an automatic transmission to effect gear ratio changes as one friction element is release and another friction element is applied during ratio changes. The transmission has an electronic controller and multiple solenoid regulator valves hydraulically coupled directly to pressure-operated friction elements. Powertrain variables are obtained and processed to calculate gear ratio control parameters derived from desired line pressure for a pressure control valve circuit that communicates with the friction elements. The desired gear ratio is determined for each given set of powertrain variables. Upshifts and downshifts are obtained by releasing one friction element in synchronism with an application of the other friction element, whereby a direct friction element to friction element torque transition is achieved with minimal inertia torque disturbances.

US Patent:

6390948, May 21, 2002

Filed:

Jul 12, 2000

Appl. No.:

09/614838

Inventors:

Pramod K. Jain - Farmington Hills MI
Gopichandra Surnilla - West Bloomfield MI

Assignee:

Ford Global Technologies, Inc. - Dearborn MI

International Classification:

F16H 5930

US Classification:

477121

Abstract:

Systems and methods for coordinating control of a DISI engine and automatic transmission determine the current and next engine operating modes and selectively modify or delay a requested transmission ratio change based on the current operating mode of the engine. Ratio changes requested during closed loop stoichiometric operation and during NOx purging cycles are commanded without delay while ratio changes requested during transitions between lean mode operation and stoichiometric operation may be delayed or the current operating mode extended to permit the ratio change to complete. Torque modulation may be provided during the ratio change using air, fuel, and/or spark control depending upon the engine operating mode.

US Patent:

6449548, Sep 10, 2002

Filed:

Feb 14, 2001

Appl. No.:

09/783116

Inventors:

Pramod Kumar Jain - Farmington Hills MI
Balaram G. Sankpal - Canton MI
Bradley Dean Riedle - Northville MI
James M. Merner - Canton MI

Assignee:

Ford Global Technologies, Inc. - Dearborn MI

International Classification:

G06F 1700

US Classification:

701 56, 701 51, 701 53, 701 60, 477143, 475149

Abstract:

An automatic transmission ratio shift control system and method for a powertrain having a throttle-controlled engine and multiple-ratio gearing, torque flow paths through the gearing being established and disestablished by pressure-operated friction elements, an electronic controller for establishing torque transitions between the friction elements as ratio changes occur in the multiple-ratio gearing, the engine throttle being controlled by an electronic throttle control that is decoupled from the driver-controlled accelerator pedal, the transmission torque output being controlled by means of a friction element capacity control strategy including a feed-forward torque term determined by changes in commanded torque, the slip duration during a ratio change being controlled by means of closed-loop engine torque control.

US Patent:

7089102, Aug 8, 2006

Filed:

Sep 12, 2003

Appl. No.:

10/661954

Inventors:

Joseph Slayton - Macomb Township MI, US
Bradley Riedle - Northville MI, US
Pramod Jain - Farmington Hills MI, US
Balaram Sankpal - Canton MI, US
Steven Meisner - Dexter MI, US
David Bidner - Livonia MI, US
Armand Giannamore - Farmington Hills MI, US

Assignee:

Ford Global Technologies, LLC - Dearborn MI

International Classification:

G06F 17/00
B60W 10/04

US Classification:

701 51, 701 54, 477132, 477 77

Abstract:

An automatic transmission ratio shift control system and method for a powertrain having an engine and multiple-ratio gearing controlled by friction elements actuated by hydraulic pressure, an electronic controller for establishing torque transitions among the friction elements as the gear ratio changes, the engine speed being controlled by an electronic throttle control. The strategy employs an electronic throttle and closed loop engine speed control and uses fuel and air as an energy source to increase engine speed during a power-off downshift. The engine speed is boosted to a level close to the synchronous speed in conjunction with release of the off-going friction element. The on-coming friction element is then applied as the engine speed approaches a desired speed. The engine speed increase is timed to lead an increase in torque converter speed.

US Patent:

50290878, Jul 2, 1991

Filed:

Jul 24, 1989

Appl. No.:

7/383506

Inventors:

Ronald T. Cowan - Troy MI
Roger L. Huffmaster - Canton MI
Pramod K. Jain - Farmington Hills MI

Assignee:

Ford Motor Company - Dearborn MI

International Classification:

B60K 4106
F16D 3108
F16D 4328

US Classification:

3644241

Abstract:

A control for a hydrokinetic torque converter lockup clutch having a clutch plate that cooperates with a torque converter impeller shell to define a control pressure cavity wherein the clutch plate is subjected to the pressure in the torus circuit of the torque converter and wherein an electronically controlled valve system is used to modulate the pressure in the control pressure cavity thereby varying the clutch capacity to establish a controlled degree of slip of the clutch so that the actual slip of the clutch may be maintained at a target slip value which is adjusted depending upon the value of input shaft speed data and throttle position data stored in the memory of a microprocessor, the microprocessor being designed to calibrate a desired slip value for each engine torque and turbine speed condition whereby a closed-loop electronic control may be achieved to provide a partial converter bypass during the major portion of the vehicle operating time.

US Patent:

45276781, Jul 9, 1985

Filed:

Dec 27, 1982

Appl. No.:

6/453415

Inventors:

Stanley L. Pierce - Northville MI
Larry T. Brown - Westland MI
Pramod K. Jain - Canton MI

Assignee:

Ford Motor Company - Dearborn MI

International Classification:

F16D 2102
F16D 4328
F16D 4330

US Classification:

192 358

Abstract:

A control system for transferring torque from a first, offgoing clutch to a second, oncoming clutch while a gear shift is being made includes speed sensors for determining the speeds of the engine shaft and the output shaft of the transmission, a gear selector position indicator, a throttle position indicator and a gear ratio sensor. Solenoid operated valves open and close a source of high pressure fluid to the clutches, whose engagement and disengagement holds the gear elements of the transmission by means of which the various speed ratios are produced. An electronic computer is supplied with the digital equivalent of the shaft speeds, the position of the gear selector and of the throttle. The engine speed-output shaft speed ratio is used as a feedback signal on the basis of which an error between its value and a commanded value is determined. An equation for determining the duty cycle is repetitively calculated and its value converted to a pulse width modulated electrical current that is applied to the solenoid windings.

US Patent:

62789260, Aug 21, 2001

Filed:

Sep 18, 2000

Appl. No.:

9/665353

Inventors:

Pramod K. Jain - Farmington Hills MI
Howard Cecil Kuhn - Farmington Hills MI
Ronald James Vodicka - West Bloomfield MI

Assignee:

Ford Global Technologies, Inc. - Dearborn MI

International Classification:

F16H 6130
B60K 4104

US Classification:

701 58

Abstract:

An adaptive electronic transmission control for an automatic transmission having multiple-ratio gearing establishing plural torque flow paths between a torque input member and a driven member, the relative motion of the elements of the gearing being controlled by a friction torque establishing member and an overrunning coupling connection between two gear elements of the gearing. A ratio shift is achieved by establishing a driving connection between a selected gearing element and a torque delivery shaft. The shift is achieved by controlling the capacity of the friction element using a fluid pressure actuator. Shift quality is optimized by establishing a bias pressure on a friction element accumulator and by using a feedback control system to control the rate of change of transmission ratio during the shift.

US Patent:

62531409, Jun 26, 2001

Filed:

Aug 4, 1999

Appl. No.:

9/366416

Inventors:

Pramod Kumar Jain - Farmington Hills MI
Howard Cecil Kuhn - Farmington Hills MI
Ronald James Vodicka - W. Bloomfield MI

Assignee:

Ford Global Technologies, Inc. - Dearborn MI

International Classification:

G06F 700

US Classification:

701 67

Abstract:

An adaptive control system and method for direct clutch engagement control for an automatic transmission including a micro-controller that receives and stores input data from driveline sensors and executes transmission clutch control logic. The micro-controller develops output signals in real time and transfers the signals to a driver circuit that controls solenoids that enable clutch engagement. The signals for establishing clutch pressure buildup are delivered to a driver circuit that produces hydraulic pressure at the clutch to achieve a smooth torque and speed transition for the torque input elements of the transmission. Adaptive pressure values are stored in a keep-alive memory. The pressure values are adjusted values based on the result of previous engagements. This compensates for driveline variables such as changes in coefficients of friction, spring loads, clutch wear, etc.

Author:

Pramod Lata Jain

ISBN #:

8170992044