A Novel Strategy for Sizing the Mechanical Pump in a Passenger Car Automatic Transmission

2021 ◽  
Author(s):  
Hesam Abbassi ◽  
Andrew Kraemer
Keyword(s):  
Automatic Transmission ◽  
Passenger Car ◽  
Mechanical Pump ◽  
Novel Strategy

A study on the improvement of the shift characteristics for the passenger car automatic transmission

2000 ◽  
Vol 23 (3/4) ◽  
pp. 307 ◽  
Author(s):  
Han Sang Jo ◽  
Yeong Il Park ◽  
Jang Moo Lee ◽  
Wook Jin Jang ◽  
Jin Ho Park ◽  
...  
Keyword(s):  
Automatic Transmission ◽  
Passenger Car

Second Paper: Recent Studies on Rotary-Engine Lubrication

1974 ◽  
Vol 188 (1) ◽  
pp. 295-302
Author(s):  
J. Y. Breau ◽  
B. J. Miller ◽  
P. Möller ◽  
T. W. Rogers
Keyword(s):  
Film Thickness ◽  
Automatic Transmission ◽  
Engine Performance ◽  
Base Stock ◽  
Bench Test ◽  
Test Procedures ◽  
Passenger Car ◽  
Engine Oils ◽  
Rotary Engine ◽  
Engine Wear

Rotary-engine lubrication studies have been conducted on four engines covering the two types of rotary engine now in production. Metallic or carbon-metallic apex seals were used. Results presented have been obtained with 13 different oil formulations, including passenger-car-engine oils corresponding to API SC, SD or SE categories, automatic-transmission fluids of the Dexron II type, and oils for two-stroke engines. Seven different test procedures have been used in these investigations, employing either engine bench test stands or vehicles on chassis dynamometers. Satisfactory rotary-engine performance has been obtained with oils containing from 0 to 1·2 per cent by weight of sulphated ash. The ability of the base stock to provide good film thickness has also been found of benefit in reducing rotary-engine wear. Passenger-car-engine oils can be excellent rotary-engine lubricants and those oils corresponding to the latest API SE classification exhibit better performance than previous API SC or SD oils. Automatic-transmission fluids have also given promising results.

Studies on Water in the Hydration Chamber of a Modified Electron Microscope

1970 ◽  
Vol 28 ◽  
pp. 544-545
Author(s):  
R. C. Moretz ◽  
G. G. Hausner ◽  
D. F. Parsons
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Electron Microscope ◽  
Steady State ◽  
Room Temperature ◽  
Small Mass ◽  
Equilibrium Pressure ◽  
Biological Objects ◽  
Mechanical Pump ◽  
Differential Pumping

Use of the electron microscope to examine wet objects is possible due to the small mass thickness of the equilibrium pressure of water vapor at room temperature. Previous attempts to examine hydrated biological objects and water itself used a chamber consisting of two small apertures sealed by two thin films. Extensive work in our laboratory showed that such films have an 80% failure rate when wet. Using the principle of differential pumping of the microscope column, we can use open apertures in place of thin film windows.Fig. 1 shows the modified Siemens la specimen chamber with the connections to the water supply and the auxiliary pumping station. A mechanical pump is connected to the vapor supply via a 100μ aperture to maintain steady-state conditions.

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