Transaxle with tandem axle

Patent metadata

Field	Value
Publication number	US-9242556-B2
Application number	US-201414203684-A
Country	US
Kind code	B2
Filing date	Mar 11, 2014
Priority date	Mar 12, 2013
Publication date	Jan 26, 2016
Grant date	Jan 26, 2016

Abstract

A transaxle with a tandem axle includes an engine, a transmission and a driveshaft. The transmission has an integrated interaxle differential mounted remotely from the engine. The transmission and the integrated interaxle differential are mounted on at least one vehicle frame member so that both are sprung weight on the vehicle. The driveshaft spans a gap between the engine and the transmission.

First claim

What is claimed is:

1. A transaxle with a tandem axle, comprising:
an engine;
a transmission with an integrated interaxle differential mounted remotely from said engine, said transmission and said integrated interaxle differential mounted on at least one vehicle frame member so that both are sprung weight on a vehicle; and
a driveshaft spanning a gap between said engine and said transmission.

2. The transaxle with tandem axle of claim 1 , wherein said interaxle differential has a first output connected to a first output shaft which is connected to a forward tandem axle.

3. The transaxle with tandem axle of claim 1 , wherein a forward tandem axle does not have an interaxle differential.

4. The transaxle with tandem axle of claim 1 , wherein said interaxle differential has a second output connected to a second output shaft which is connected to a rear tandem axle.

5. The transaxle with tandem axle of claim 1 , wherein a forward axle half shaft is connected at an inboard end to a forward tandem axle and to a forward spindle housing at an outboard end.

6. The transaxle with tandem axle of claim 1 , wherein a rear portion of a first trailing arm is fixedly connected to a forward spindle housing and a forward portion of said first trailing arm is pivotally connected to said vehicle frame member.

7. The transaxle with tandem axle of claim 1 , wherein a rearward portion of a forward spindle housing defines an air spring mount.

8. The transaxle with tandem axle of claim 1 , wherein a rear axle half shaft is connected at an inboard end to a rear tandem axle and to a rear spindle housing at an outboard end.

9. The transaxle with tandem axle of claim 1 , wherein a rear portion of a second trailing arm is fixedly connected to a rear spindle housing and a forward portion of said second trailing arm is pivotally connected to said vehicle frame member.

10. The transaxle with tandem axle of claim 1 , wherein a rearward portion of a rear spindle housing defines an air spring mount.

11. A transaxle with a tandem axle, comprising:
an engine mounted on a first set of bushings tuned to dampen engine vibrations;
a transmission with an integrated interaxle differential mounted remotely from said engine and on a second set of bushings tuned to dampen transmission vibrations, said bushings mounting said transmission and integrated interaxle differential on at least one frame member so that both are sprung weight on a vehicle; and
a driveshaft spanning a gap between said engine and said transmission.

Assignees

• Dana Heavy Vehicle Sys Group

Inventors

• Ziech James F
• Morscheck Timothy J

Classifications

• B60G2200/14

  with lateral arms · CPC title

• B60G2300/026

  Heavy duty trucks · CPC title

• B60G2200/22

  Trailing arms connected by a straight torsion bar · CPC title

• B60K17/36 Primary

  for driving tandem wheels · CPC title

• B60G2300/0262

  Multi-axle trucks · CPC title