Originally Posted By: TiredTrucker
Originally Posted By: chrisri
What is your average mpg TiredTrucker, and what is your vehicle GW fully loaded?
Dumped ECM awhile back when I got an ABS sensor replaced and they had the ECM hooked up. The lifetime average mpg for the truck was 7.93 mpg over roughly 400,000 miles. Loads are anywhere from 10,000 to 46,500 lb, with an average payload of roughly 37,000 lb, for a total average gross of around 69,500 lb. Truck and trailer, with full fuel tanks, comes in at around 32,500 lb.
There is some truth that the heavy truck OEM's are going thru a hard time with the emissions stuff, similar to what the autos went thru in the 70's, but hardly comparable. EGR with a gasser is quite another issue than EGR on a diesel. Soot loading is one aspect along with EGR on diesel must be cooled substantially before being introduced to intake. This requires extreme heavy duty radiator cooling far beyond the past, and EGR coolers can crack and fail and allow coolant into intake directly. leading to major engine repairs.
And Selective Catalytic Reduction, with the associated Diesel Exhaust Fluid is far beyond anything that a catalytic converter on a gas motor is. And then there is the Diesel Particulate Filter than captures every little piece of carbon that makes it that far, and once that unit reaches a predetermined clogged level, then fuel is injected and a very hot burn of up to 1500F is initiated to burn off those particulates.
Auto emissions in the past, and even current, doesn't even come close to the complexity of the emissions setups required on diesels now. To even remotely compare the current diesel OEM hassles to the emissions problems OEM's dealt with in cars in the 70's and early 80's is just a little off the mark. What the gassers dealt with was just a warm up compared to the diesel OEM's are dealing with. Either way, the consumer is the worse for it.
Thanks for the answer TT. I just wanted to pull a comparison between American and European rigs. Over here truck manufacturers seems were able to reduce fuel consumption even with introduction of more strict emission controls. In Europe maximum GW is 40 tonnes, but some countries like Italy allow up to 44 tonnes, and with 40 tonnes 2014 IVECO rig is consuming 31-32 L/100KM. With 44 tonnes consumption goes up by a litre or two. Back in a 05 similar MAN 440hp rig used around 38L/100KM. MB Actros of the same age used also around 37-40L/100KM. So as you can see consumption went down quite a bit in the last decade.
Originally Posted By: chrisri
What is your average mpg TiredTrucker, and what is your vehicle GW fully loaded?
Dumped ECM awhile back when I got an ABS sensor replaced and they had the ECM hooked up. The lifetime average mpg for the truck was 7.93 mpg over roughly 400,000 miles. Loads are anywhere from 10,000 to 46,500 lb, with an average payload of roughly 37,000 lb, for a total average gross of around 69,500 lb. Truck and trailer, with full fuel tanks, comes in at around 32,500 lb.
There is some truth that the heavy truck OEM's are going thru a hard time with the emissions stuff, similar to what the autos went thru in the 70's, but hardly comparable. EGR with a gasser is quite another issue than EGR on a diesel. Soot loading is one aspect along with EGR on diesel must be cooled substantially before being introduced to intake. This requires extreme heavy duty radiator cooling far beyond the past, and EGR coolers can crack and fail and allow coolant into intake directly. leading to major engine repairs.
And Selective Catalytic Reduction, with the associated Diesel Exhaust Fluid is far beyond anything that a catalytic converter on a gas motor is. And then there is the Diesel Particulate Filter than captures every little piece of carbon that makes it that far, and once that unit reaches a predetermined clogged level, then fuel is injected and a very hot burn of up to 1500F is initiated to burn off those particulates.
Auto emissions in the past, and even current, doesn't even come close to the complexity of the emissions setups required on diesels now. To even remotely compare the current diesel OEM hassles to the emissions problems OEM's dealt with in cars in the 70's and early 80's is just a little off the mark. What the gassers dealt with was just a warm up compared to the diesel OEM's are dealing with. Either way, the consumer is the worse for it.
Thanks for the answer TT. I just wanted to pull a comparison between American and European rigs. Over here truck manufacturers seems were able to reduce fuel consumption even with introduction of more strict emission controls. In Europe maximum GW is 40 tonnes, but some countries like Italy allow up to 44 tonnes, and with 40 tonnes 2014 IVECO rig is consuming 31-32 L/100KM. With 44 tonnes consumption goes up by a litre or two. Back in a 05 similar MAN 440hp rig used around 38L/100KM. MB Actros of the same age used also around 37-40L/100KM. So as you can see consumption went down quite a bit in the last decade.