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Utility vehicle horsepower management

A technology of load force and control system, applied in the field of embodiment

Active Publication Date: 2015-02-04
斗山山猫北美公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method reduces loads, even the most experienced operators cannot use this technique to operate machinery at peak efficiency

Method used

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  • Utility vehicle horsepower management
  • Utility vehicle horsepower management
  • Utility vehicle horsepower management

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Embodiment Construction

[0015] Before any embodiments of the invention are described in detail, it is to be understood that the concepts disclosed herein are not limited in their application to the details of construction and the arrangements of parts set forth in the following description or illustrated in the following drawings. The concepts illustrated in these embodiments can be practiced or carried out in various ways. The phraseology and terminology used herein are for the convenience of description and should not be regarded as limiting. Words such as "comprises," "comprising," and "having," as well as variations thereof herein, are meant to encompass the items listed thereafter and equivalents of the items as well as additional items. Unless otherwise specified or limited, the terms "mount", "connect", "support" and "couple" and variations thereof are used broadly and include direct and indirect mounting, connecting, supporting and coupling.

[0016] A power machine 100 in the form of a util...

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Abstract

Disclosed are horsepower management systems and methods for use on power machines with an engine that powers a drive system. An engine speed control device controls the engine speed. A variable displacement drive pump controlled by a displacement control member provides pressurized fluid to a drive motor. A control system communicates with the engine speed control device and the pump displacement control member. The control system includes a user input device and a command lever rotatably coupled to the displacement control member and capable of receiving the user input. The command lever provides a signal to the engine speed control device in response to the user input. The command lever also commands a given displacement via the displacement control member subject to load forces on the hydrostatic pump transmitted to a limiting mechanism coupled to the command lever and the displacement control member.

Description

Background technique [0001] Power machinery manufacturers produce a large number of vehicles with hydrostatic drive systems powered by internal combustion engines, including skid steers, truck loaders, excavators, and utility vehicles. Some machines, such as skid steers, have a drive pump in addition to a hand throttle that is used to set the engine speed and is independent of any drive control Or in the case of control, the pump is conventionally controlled directly via a linkage from a control input such as a joystick to stroke the pump. [0002] It is known that certain heavy load situations, such as digging, carrying heavy loads on uneven terrain, or towing can cause excessive loading of the engine, resulting in difficulty in engine operation. If the load is not reduced, the engine will stop. In machinery such as skid steers, an experienced operator can reduce the input to the hydrostatic drive pump to compensate by reducing the stroke of the stroke control input. Altho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02F9/22
CPCE02F9/2235F16H61/437E02F9/2004B60K2026/029E02F9/2066F02D1/00E02F9/2296
Inventor 马修·J·卡尔多布赖恩·德勒特
Owner 斗山山猫北美公司