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#91
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Thielert (Diesel Engines)
"WingFlaps" wrote in message
... On Feb 16, 12:01 pm, Bertie the Bunyip wrote: "Capt. Geoffrey Thorpe" The Sea Hawk At Wow Way D0t C0m wrote f. Can you actually name any common rail diesel (in any application) that will run without the computer? Nope. I know the older common rail ones didn't have an electronic computer, but the thielert does. In the first common rail engines, wasn't it a hydraulic (rather than mechanical cam) system that controlled the injector valve? They are electro-hydraulic. The high pressure injectors are triggered by the mid pressure hydraulics which are triggered by solenoid valves controlled by the engine computer. There ain't no mechanical backup - no way - no how. So, a common rail diesel is 100% dependant on electricity to run. Just like your Lycoming which won't run if the mags don't send enough electrons to the spark plug at the right time with NO mechanical backup - no way - no how. -- Geoff The Sea Hawk at Wow Way d0t Com remove spaces and make the obvious substitutions to reply by mail When immigration is outlawed, only outlaws will immigrate. |
#92
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Thielert (Diesel Engines)
I haven't really been following this thread, but I thought I would interject
something I just learned about Thielert diesels. A local flight school which also rents out airplanes, just got a DA42 Twinstar. An engine quit during a flight a few days ago. The pilot shut it down, then later attempted a restart. It started back up and ran fine for a few minutes, then quit again. No anomalous indication on any of the engine instrumentation. Turns out that an oil filter in a gearbox, I believe it was, was clogged. The computer senses that and shuts the engine down. No warning, no indication of trouble, just shuts it down, or takes it down to very low power. Saves the engine in preference to the pilot. This seems to not be a rare event with these engines. "Charles Talleyrand" wrote in message ... This data is from 2006, they Thielert has not released a 2007 annual report yet. The annual report for Thielert, which makes diesel engines for certain single-engine Cessnas, Pipers, and Diamonds, shows an increase in sales of aircraft engines from 22 million Euros to 31 million Euros. That's a 44% increase. It's probably over 1000 engines in total. They are the third largest piston engine maker in the world (which surprises me, I would have thought Lycoming, Continental, and Rotax). The total market for piston aircraft engines is about 13,000 including both new planes and the larger replacement market. They aim to sell helicopter engines in 2009. The best quote from the annual report: "We aim to achieve a market share in piston aircraft engines of over 50% in the medium term. The necessary demand and customer base are already in place." Maybe diesel engines are catching on?????? |
#93
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Thielert (Diesel Engines)
On Feb 18, 4:42*am, "Capt. Geoffrey Thorpe" The Sea Hawk At Wow Way
D0t C0m wrote: "WingFlaps" wrote in message ... On Feb 16, 12:01 pm, Bertie the Bunyip wrote: "Capt. Geoffrey Thorpe" The Sea Hawk At Wow Way D0t C0m wrote f. Can you actually name any common rail diesel (in any application) that will run without the computer? Nope. I know the older common rail ones didn't have an electronic computer, but the thielert does. In the first common rail engines, wasn't it a hydraulic (rather than mechanical cam) system that controlled the injector valve? They are electro-hydraulic. The high pressure injectors are triggered by the mid pressure hydraulics which are triggered by solenoid valves controlled by the engine computer. What engine computers were used in the 1940's and 1950's? Cheers |
#94
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Thielert (Diesel Engines)
"WingFlaps" wrote in message
... What engine computers were used in the 1940's and 1950's? Ford PROCO. Texico was working on one in the 50's also, but I don't recall the name. Can't recall the others. What COMMON RAIL diesels were made in the 1940's and 1950's? Can you name a single COMMON RAIL diesel that didn't have a computer? -- Geoff The Sea Hawk at Wow Way d0t Com remove spaces and make the obvious substitutions to reply by mail When immigration is outlawed, only outlaws will immigrate. |
#95
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Thielert (Diesel Engines)
"Capt. Geoffrey Thorpe" wrote Can you name a single COMMON RAIL diesel that didn't have a computer? Yep; Ford tractors! g -- Jim in NC |
#96
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Thielert (Diesel Engines)
On Feb 18, 6:31*am, "Capt. Geoffrey Thorpe" The Sea Hawk At Wow Way
D0t C0m wrote: "WingFlaps" wrote in message ... What engine computers were used in the 1940's and 1950's? Ford PROCO. Texico was working on one in the 50's also, but I don't recall the name. Can't recall the others. What COMMON RAIL diesels were made in the 1940's and 1950's? Can you name a single COMMON RAIL diesel that didn't have a computer? No need to shout, I know we are talking about common rail engines. Now, I'm not sure that thermoinic valve computers were ever used on a diesel engine but I don't recall hearing of any computer on a 1950's Cummins PT or even a 1940's Cooper Bessemer. Cheers |
#97
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Thielert (Diesel Engines)
"Capt. Geoffrey Thorpe" The Sea Hawk At Wow Way D0t C0m wrote in
: "WingFlaps" wrote in message . .. On Feb 16, 12:01 pm, Bertie the Bunyip wrote: "Capt. Geoffrey Thorpe" The Sea Hawk At Wow Way D0t C0m wrote f. Can you actually name any common rail diesel (in any application) that will run without the computer? Nope. I know the older common rail ones didn't have an electronic computer, but the thielert does. In the first common rail engines, wasn't it a hydraulic (rather than mechanical cam) system that controlled the injector valve? They are electro-hydraulic. The high pressure injectors are triggered by the mid pressure hydraulics which are triggered by solenoid valves controlled by the engine computer. There ain't no mechanical backup - no way - no how. So, a common rail diesel is 100% dependant on electricity to run. Just like your Lycoming which won't run if the mags don't send enough electrons to the spark plug at the right time with NO mechanical backup - no way - no how. Two injectors per cylinder, are there? Apples and oranges, sunshine.. Bertie |
#98
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Thielert (Diesel Engines)
"Capt. Geoffrey Thorpe" The Sea Hawk At Wow Way D0t C0m wrote in
: "WingFlaps" wrote in message ... What engine computers were used in the 1940's and 1950's? Ford PROCO. Texico was working on one in the 50's also, but I don't recall the name. Can't recall the others. What COMMON RAIL diesels were made in the 1940's and 1950's? Can you name a single COMMON RAIL diesel that didn't have a computer? Who cares? You stick any engine on the front of an airplane that needs a battery to fly and you have an airplane I really would rather not fly. Pretty simple really. Bertie |
#99
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Thielert (Diesel Engines)
"Stan Prevost" wrote in
: I haven't really been following this thread, but I thought I would interject something I just learned about Thielert diesels. A local flight school which also rents out airplanes, just got a DA42 Twinstar. An engine quit during a flight a few days ago. The pilot shut it down, then later attempted a restart. It started back up and ran fine for a few minutes, then quit again. No anomalous indication on any of the engine instrumentation. Turns out that an oil filter in a gearbox, I believe it was, was clogged. The computer senses that and shuts the engine down. No warning, no indication of trouble, just shuts it down, or takes it down to very low power. Saves the engine in preference to the pilot. This seems to not be a rare event with these engines. Oh boy. I definitely want one now. Bertie |
#100
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Thielert (Diesel Engines)
"Bertie the Bunyip" wrote in message
... ... Two injectors per cylinder, are there? Apples and oranges, sunshine.. More than one mag switch per engine? Same-o same-o mxwanaboi. -- Geoff The Sea Hawk at Wow Way d0t Com remove spaces and make the obvious substitutions to reply by mail When immigration is outlawed, only outlaws will immigrate. |
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