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Power system with AMT and hydraulic torque converter and control method of power system

A hydraulic torque converter and power system technology, which is applied in the power system with AMT and hydraulic torque converter and its control field, can solve the problems of insufficient stability of power output, so as to improve stability, improve braking effect, The effect of improving shift performance

Pending Publication Date: 2021-10-22
四川海天仪表电器开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the existing AMT transmission system is directly used in the power system of special vehicles, the power output will not be stable enough

Method used

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  • Power system with AMT and hydraulic torque converter and control method of power system
  • Power system with AMT and hydraulic torque converter and control method of power system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 As shown, a power system with an AMT and a torque converter includes an engine and a hub, the engine drives the hub through a transmission system, and the transmission system includes a torque converter, a clutch, and an AMT gearbox connected in sequence and reducer, where the torque converter connects the engine to the clutch.

[0033] As described above, the present application provides a power system with an AMT and a torque converter. Compared with the prior art, the solution uses a hydraulic torque converter between the engine and the clutch. As a result, the engine and the AMT gearbox are not only rigidly connected through the clutch, but the hydraulic torque converter with separate guide wheels and turbines realizes a flexible connection between the engine and the gearbox, avoiding the AMT gearbox. Poor combination of gear speed regulation and slow combination of clutch leads to intermittent power output, driving stumbles and stalling. The pow...

Embodiment 2

[0035] The present embodiment is further limited on the basis of embodiment 1:

[0036] In order to meet the requirement that special vehicles have sufficient power sources under harsh driving conditions, the parameters of the engine and clutch are selected and set as follows: the maximum torque of the engine is greater than 2000N*m, the maximum power is greater than 330kw, and the maximum speed is less than 2500r / min; The clutch adopts a double-plate clutch, and the performance of the clutch meets: its maximum transmission torque is greater than 3000N*m, the pressing force is greater than 17000N and less than 19000N, and the separation stroke is greater than 15mm and less than 20mm.

[0037] The hydraulic torque converter is a centrifugal lock-up hydraulic torque converter, and the performance of the hydraulic torque converter satisfies: when the engine speed is less than 2200r / min, the hydraulic torque converter outputs power flexibly; when the engine speed is When it is gre...

Embodiment 3

[0039] Such as figure 2As shown, the present application also provides a control method of a power system with an AMT and a hydraulic torque converter. The method is a control method based on any one of the aforementioned power systems with AMT and hydraulic torque converter; the control method includes at least one of the following methods: start control method, including fast start mode, normal start mode, Small ramp manual start mode, large ramp manual start mode; manual shift control method, including manual low gear hold mode, manual shift engine protection mode, manual upshift control method, manual high speed hold mode; automatic shift control method, Including high-speed locking mode, automatic shift engine protection mode, automatic shift mode, small slope shift mode, large slope shift mode; brake shift control method, including brake engine protection mode, normal resistance downshift mode , high-grade steep downhill braking mode, low gear steep downhill braking mo...

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PUM

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Abstract

The invention discloses a power system with an AMT and a hydraulic torque converter and a control method of the power system, and relates to the technical field of vehicle engineering. The power system with the AMT and the and a hydraulic torque converter comprises an engine and a hub, the engine drives the hub through a transmission system, the transmission system comprises the hydraulic torque converter, a clutch, an AMT gearbox and a speed reducer which are sequentially connected, and the hydraulic torque converter is connected with the engine and the clutch. The invention further discloses the control method of the power system with the AMT and the hydraulic torque converter. The method is a control method based on the power system in the claim. The control method comprises at least one of the following methods: a starting control method, a manual gear shifting control method, an automatic gear shifting control method and a braking gear shifting control method.

Description

technical field [0001] The invention relates to the technical field of vehicle engineering, and further relates to a power system with an AMT and a hydraulic torque converter and a control method thereof. Background technique [0002] Gear shifting system is an integral part of vehicle power system. At present, there are three main transmission and shift systems for special heavy-duty vehicles: manual mechanical transmission (MT), electrohydraulic automatic transmission (AT), and electromechanical transmission (AMT). [0003] The manual mechanical transmission (MT) needs to manually toggle the transmission lever to change the gear meshing device in the transmission for the purpose of shifting gears. The structure of MT gearbox is simple, but the automation is low and the operation is cumbersome. The hydraulic automatic transmission (AT) realizes automatic speed change through the combination of hydraulic transmission and planetary gear. Compared with the MT gearbox, the A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/02F16H61/04F16H63/42F16H41/24
CPCF16H61/0204F16H61/04F16H63/42F16H41/24
Inventor 不公告发明人
Owner 四川海天仪表电器开发有限公司
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