I would not worry about having to attend the funeral of the pickup diesel any time soon.
Yes, the new Ford Ecoboost and GM gen 5 V8's are direct injection, but they are still injecting fuel in the intake stroke and compressing a fuel / air mix. They cannot run the more efficient cylinder pressures of a diesel engine until they are compressing only air and adding the fuel at the start of the power stroke. As it is now, detonation of pre mixed fuel and air is the killer of really efficient cylinder pressures in a gas motor.
Until someone comes up with a way to inject gasoline at the top of the compression stroke so they can use diesel like compression ratios, they can never match the fuel efficiency of a DI diesel.
The Ford Ecoboost DI engine is on the road now, but only makes 20+ mpg at light loads.
Owners report that if you put it on the cruse control at 60 MPH, it will make 20-25 mpg, but put any load on it or drive 70+MPH and mpg is in the teens. When someone builds one with 17/1 CR and DI at TDC on the compression stroke, then we may see diesel like fuel economy out of a gas engine.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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