Truck & Off-Highway Engineering - April 2022 - 11

TECHNICAL INNOVATIONS
POWERTRAIN
Paccar launches new 18-speed automated transmissions
The TX-18 and TX-18 Pro feature several enhancements, including expanded high-capacity PTO functionality.
Kenworth and Peterbilt have announced the availability of
the new Paccar TX-18 and TX-18 Pro automated transmissions
for Class 8 trucks and select off-highway applications. The TX18
transmission will be available in Peterbilt Models 567, 389
and 579 and Kenworth T680, T880 and W990 models. The
transmissions are designed for exclusive compatibility with
the Paccar MX-11 and MX-13 engines.
These 18-speed units supplement the existing Paccar TX-12
transmission line and offer additional capability for heavy onhighway
use. The TX-18 Pro adds capabilities over the standard
TX-18 for extreme duty and off-highway applications
such as heavy haul, dump truck and cranes.
" The gains in productivity, efficiency, uptime and the ease
of use for drivers make these transmissions a must-have, " said
Jacob Montero, Peterbilt general sales manager. " The integration
of the new TX-18 and TX-18 Pro with Paccar's line of MX
engines further enhances Peterbilt's ability to provide our
customers the lowest cost of ownership, best-performing
trucks in the industry. "
The TX-18 carries a maximum power rating of 510 hp (380
kW) and a torque capacity of 1,850 lb-ft (2,510 Nm). Both
transmissions have a gross combination vehicle weight
(GCVW) of 140,000 lb (63,500 kg) and offer expanded highcapacity
PTO functionality, including an 8-bolt bottom mount
and 4-bolt rear mount for a combined 160 hp (120 kW) capacity
at 1,400 rpm.
The TX-18 has three reverse gears, while the TX-18 Pro has six
ELECTRIFICATION
Lightning's eChassis targets commercial EVs
Lightning eMotors has announced the
availability of the Lightning eChassis
platform for commercial EV applications.
The platform, which was co-developed
with Metalsa, will be available
in several configurations including a
TRUCK & OFF-HIGHWAY ENGINEERING
Class 4 and Class 5 commercial electric
chassis cab, a stripped chassis and a
cutaway chassis.
With the addition of the eChassis,
Lightning eMotors has become the first
commercial EV manufacturer to offer
both electrification of legacy OEM platforms
and purpose-built vehicles. The
Loveland, Colorado-based company expects
pre-production units to be available
by second quarter 2022. Regular
production units are expected to be
April 2022 11
for applications with numerically low axle ratios. Both gearboxes
feature a high-pressure diecast aluminum casing, one-piece serviceable
input shaft, helical gearing, precision lubrication system,
extreme-duty clutch and an integrated clutch housing.
The transmissions also are equipped with an internal oil temperature
sensor. The sensor shows transmission temperatures
on the in-cab 15-inch digital display and notifies the driver of
excessive temperatures. The TX-18 can be configured with an
optional transmission cooler for high-demand applications.
The TX-18 and TX-18 Pro feature Kenworth's column-mounted,
right-hand shifter as standard equipment. The shifter placement
offers gear selection and engine brake controls at the
driver's fingertips for enhanced ergonomics, comfort and overall
performance.
" Drivers will appreciate the versatility of the Paccar TX-18
and Paccar TX-18 Pro that deliver excellent low-speed maneuverability, "
said Jim Walenczak, Kenworth assistant general
manager for sales and marketing. " Both seasoned and new
drivers will benefit from tailored configurations that help
them get the job done, and new performance calibrations that
expertly control transmission shift points. "
On-highway maintenance intervals of the TX-18 and TX-18
Pro are 500,000 miles (800,000 km) or five years, and vocational
intervals are 250,000 miles (400,000 km) or three
years for the TX-18 and TX-18 Pro. The transmissions utilize a
maintenance-free clutch.
Matt Wolfe
PACCAR

Truck & Off-Highway Engineering - April 2022

Table of Contents for the Digital Edition of Truck & Off-Highway Engineering - April 2022