Bi-directional tractor exhaust system with ground speed detection
AssigneeDeere & Company
InventorsChristopher T. McCord, Tien-Chuong Lim, Stephen M. Upchurch
Life of this patent
Estimating the term…
Abstract
A bi-directional tractor exhaust system with ground speed detection includes a downwardly directed exhaust pipe, an upwardly directed exhaust pipe, and an intermediate exhaust pipe connected to the outlet of a diesel particulate filter. An exhaust pipe valve may be opened or closed by an actuator to direct exhaust through the downwardly directed exhaust pipe during regeneration of the diesel particulate filter if a signal from a ground speed sensor indicates ground speed above a first speed, or through the upwardly directed exhaust pipe if the ground speed is below a second speed.
Claims10
A bi-directional tractor exhaust system, comprising:
- a downwardly directed exhaust pipe connected to an upwardly directed exhaust pipe;
- an exhaust pipe valve mounted in the downwardly directed exhaust pipe;
- an actuator connected to the exhaust pipe valve and moveable between a first position opening the exhaust pipe valve to direct exhaust through the downwardly directed exhaust pipe, and a second position closing the exhaust pipe valve to direct exhaust through the upwardly directed exhaust pipe;
- and
- a microcontroller connected to the actuator and to a ground speed detector, the microcontroller signaling the actuator to move the exhaust pipe valve to the first position above a first ground speed, or to the second position below a second ground speed.
A bi-directional tractor exhaust system, comprising:
- an exhaust valve directing exhaust through a downwardly directed exhaust pipe or through an upwardly directed exhaust pipe connected together adjacent a diesel particulate filter;
- and
- a microcontroller connected to the diesel particulate filter, the exhaust valve and a ground speed sensor, the microcontroller commanding the valve to direct exhaust through the downwardly directed exhaust pipe during regeneration of the diesel particulate filter unless the ground speed sensor indicates a first speed for at least a first time.
A bi-directional tractor exhaust system, comprising:
- a downwardly directed exhaust pipe, an upwardly directed exhaust pipe, and an intermediate exhaust pipe between the downwardly directed and upwardly directed exhaust pipes;
- the intermediate exhaust pipe connected to the outlet of a diesel particulate filter;
- and
- an exhaust pipe valve in the downwardly directed exhaust pipe that may be opened or closed by an actuator to direct exhaust through the downwardly directed exhaust pipe during regeneration of the diesel particulate filter if a signal from a ground speed sensor indicates ground speed above a first speed, or through the upwardly directed exhaust pipe if the ground speed is below a second speed.
Dependencies are inferred from the claim text.