Browse Publications Technical Papers 851505
1985-09-01

An Automotive Style Hydrostatic Transmission Control 851505

Certain design and performance benefits are realized by utilizing hydrostatic transmission (HST) for vehicle propel drives. The component nature of the HST provides design flexibility to build the transmission into the machine and not require the carriage be built around the transmission. This feature may result in lower design and installation costs and potentially better control over vehicle dynamics. Other benefits derived from HST characteristics:
  1. A.
    Load carrying capability is independent of engine speed.
  2. B.
    Maximum drawbar pull is available over a wide engine speed range.
  3. C.
    Hydrostatic braking.
  4. D.
    Vehicle inching.
  5. E.
    Potential for fuel savings.
The typical HST control is the displacement type. The pump or motor displacement is regulated by a mechanical, hydraulic or electrically signaled servo valving. The servo valve characteristically eliminates displacement error. Displacement controls require skilled and wary operators or excessive engine power to prevent inadvertent engine stalling under all vehicle loading and speed possibilities.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Preview Document Add to Cart
Members save up to 16% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Modeling and Analysis of an Automatic Transmission Internal Gear Oil Pump with Cavitation

2005-01-2448

View Details

TECHNICAL PAPER

Development of the Variable Displacement Vane Pump for the Automotive Power Steering System

930261

View Details

TECHNICAL PAPER

Power-By-Wire Piezoelectric-Hydraulic Pump Actuator for Automotive Transmission Shift Control

2009-01-0950

View Details

X