US2016186389A1PendingUtilityA1

Method of warming paving machines

Assignee: CATERPILLAR PAVING PRODPriority: Mar 10, 2016Filed: Mar 10, 2016Published: Jun 30, 2016
Est. expiryMar 10, 2036(~9.6 yrs left)· nominal 20-yr term from priority
E01C 19/48E01C 2301/10
37
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Claims

Abstract

A method to warm a paving machine is disclosed. The method includes activation of a tamper speed control mode associated with a tamper bar in a screed section of the paving machine. A temperature of hydraulic oil of a tamper hydraulic circuit is detected. In addition, a temperature of the screed section is detected. A speed of operation of the tamper bar is set to a predetermined threshold if a temperature of the hydraulic oil is greater than a first oil temperature limit and a temperature of the screed section is greater than a screed temperature limit. The paving machine transitions to a paving mode, if the hydraulic oil temperature exceeds a second oil temperature limit and a minimum operational screed temperature is attained.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A method of warming a paving machine, the method comprising:
 activating a tamper speed control mode associated with a tamper bar in a screed section of the paving machine;   detecting a temperature of a hydraulic oil of a tamper hydraulic circuit associated with an operation of the tamper bar;   detecting a temperature of the screed section;   allowing the tamper bar to actuate at a speed of operation equal to a predetermined threshold if a temperature of the hydraulic oil is greater than a first oil temperature limit and a temperature of the screed section is greater than a screed temperature limit; and   transitioning the paving machine to a paving mode if the hydraulic oil temperature exceeds a second oil temperature limit and a minimum operational screed temperature is attained, wherein in the paving mode the tamper bar is operated at a desired speed of operation,   wherein the warming of the paving machine via a warm-up sequence may be de-activated if the park brake and the screed section are not in the proper state to facilitate safe operation of the tamper system.

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