Engines

Multiple lawsuits against Caterpillar for chronic failures of its 2007-2010 ACERT diesels go beyond heavy trucks, and include school buses and motor coaches as well as at least one marine engine, according to news reports, while a wide variety of problems have been chronicled in discussion groups on the Internet.

Navistar has started customer shipments of its International DuraStar and WorkStar trucks with the company's 9.3-liter diesels fitted with selective catalytic reduction emissions-aftertreatment equipment.

Based on a 2.8-liter diesel, the spark-ignited Ethos engine runs on corn- or lignocellulosic-derived fuel, and also produces high power and torque.

Isuzu Commercial Truck of America recently announced the addition of the NPR-XD to its to its N-Series diesel trucks line-up.

Truck engine maker Cummins announced two key leadership changes on Tuesday. Rich Freeland will assume the role of president and chief operating officer, reporting to Tom Linebarger, who will remain chairman and chief executive officer.

Lawyers for trucking companies have filed lawsuits in three states against the parent company of International Trucks, claiming Navistar failed to disclose known defects and problems with its EPA 2010 MaxxForce engines.

The Peterbilt-Cummins SuperTruck project achieved almost-unheard-of gains of 68% in freight efficiency over a 24-hour duty-cycle, a 50% improvement in freight efficiency on an 11-hour drive-cycle and a 20% improvement in the thermal efficiency of the engine. How did they do it, and what does that mean?

Since the first clean diesel engines were introduced more than seven years ago, they now represent about one-third of all the trucks registered to operate on U.S. highways. The total population of in-service clean diesel engines now numbers about 2.8 million.

A proposed test for adhesive wear, or scuffing, will not be a part of the upcoming new API oil standard, currently known as PC-11, and the new category is running behind schedule for implementation.

Less than seven years after introducing its Detroit DD15 engine, Detroit Diesel on Wednesday marked the production of its 250,000th DD Series engine.

Horsepower and torque ratings announced by General Motors will make its 2015 Chevrolet Colorado and GMC Canyon pickups the most powerful in the midsized truck segment, the company claims.

From the equipment you spec and maintain, to the fuel you buy, to driver training and incentives, you’ll find tips for nearly any type of fleet.

DETROIT -- Detroit Diesel introduced its new Integrated Detroit Powertrain Thursday at an event in Detroit. The powertrain package brings together the company’s DD15 engine, DT12 transmission and Detroit axles.

Ford's all-new F-650/F-750 medium-duty truck lineup with 6.7-liter Power Stroke V-8 turbo diesel will feature three engine power ratings, with no vocational limits on top ratings.

What do you get when you put a group of trucking journalists in a room with three tables of engine teardown parts and ask them to choose which one is from the truck running the experimental low-viscosity oil? A lot of eeny-meeny-miney-mo.

So what do engine oil and competition pit barbecue have in common? Editor in Chief Deborah Lockridge finds out for her All That's Trucking blog.

A North Carolina fleet has been running a group of trucks on three different Shell Rotella oils -- a 15w-40, a 10w-30, and a 10w-30 that's been altered to provide a lower high-temp/high-shear number than is currently approved. A teardown of one of each after more than half a million miles shows virtually no difference in wear among the three engines. Learn more here. (By Deborah Lockridge, Editor in Chief.)

In anticipation of a new heavy duty engine oil API classification aimed at improving fuel economy with oils meeting lower high-temperature/high-shear viscosity standards, Shell did a field test of an experimental low HTHS-viscosity version of its Rotella engine oil. It shared the results with trade press editors on May 14, 2014. Here Howard Hill, engineer, lubricant technology, explains the results to HDT Editor in Chief Deborah Lockridge.