Porsche Factory Engine Testing Questions
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Porsche Factory Engine Testing Questions
Tonight's NatGeo 'Ultimate Factories' building the 911, shows truly a modern car assembly facility of an iconic advanced sports car. Lots of innovative assembly methods and technologies.
The boxer engine is assembled with a rational mix of manual and automated assembly. The engine is 'cold tested' sans fluids, where I presume they rotate the crankshaft and measure pressures and friction. It appears though that the flat6 is not 'hot tested' as it is only fired for the first time as the car is driven out of the line for some basic and brief roller/dyno testing (limited to 75MPH). If this is indeed the case, break-in of these engines must be looked into with a new perspective. Are piston rings settled as the car leaves the factory?
I look forward to comments.
The boxer engine is assembled with a rational mix of manual and automated assembly. The engine is 'cold tested' sans fluids, where I presume they rotate the crankshaft and measure pressures and friction. It appears though that the flat6 is not 'hot tested' as it is only fired for the first time as the car is driven out of the line for some basic and brief roller/dyno testing (limited to 75MPH). If this is indeed the case, break-in of these engines must be looked into with a new perspective. Are piston rings settled as the car leaves the factory?
I look forward to comments.
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I'm wondering if they skipped the hot test in the show. From Porsche's virtual factory tour:
The pre-picked components are supplied to the various work stations in picking trolleys for precision manual assembly. Crankcase, pistons, oil suction pipe, water and oil pump, cylinder head, tappets, intake system and wiring harness are assembled with great care to form a finished unit weighing 200 kg.
The following hot test is the final step in the engine production process. The engines are first of all heated up to operating temperature and then subjected to a functional test including full-throttle testing. Information in the form of up to 220 parameters is generated in this test of around five minutes' duration.
This ensures that Porsche's high quality standards are also met in the area of engine construction.
Following subsequent connection of the engine to the transmission, the engine is ready for the "marriage" ceremony (connection of the drivetrain and chassis to the body).
http://www.porsche.com/usa/aboutpors...-f64229f6bd09/
The pre-picked components are supplied to the various work stations in picking trolleys for precision manual assembly. Crankcase, pistons, oil suction pipe, water and oil pump, cylinder head, tappets, intake system and wiring harness are assembled with great care to form a finished unit weighing 200 kg.
The following hot test is the final step in the engine production process. The engines are first of all heated up to operating temperature and then subjected to a functional test including full-throttle testing. Information in the form of up to 220 parameters is generated in this test of around five minutes' duration.
This ensures that Porsche's high quality standards are also met in the area of engine construction.
Following subsequent connection of the engine to the transmission, the engine is ready for the "marriage" ceremony (connection of the drivetrain and chassis to the body).
http://www.porsche.com/usa/aboutpors...-f64229f6bd09/
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My guess is they figured we already showed the cold-test and we're going to show the dyno runs at the end so leave it out. Most viewers wouldn't care about it, but us owners would love to have seen it.
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Tonight's NatGeo 'Ultimate Factories' building the 911, shows truly a modern car assembly facility of an iconic advanced sports car. Lots of innovative assembly methods and technologies.
The boxer engine is assembled with a rational mix of manual and automated assembly. The engine is 'cold tested' sans fluids, where I presume they rotate the crankshaft and measure pressures and friction. It appears though that the flat6 is not 'hot tested' as it is only fired for the first time as the car is driven out of the line for some basic and brief roller/dyno testing (limited to 75MPH). If this is indeed the case, break-in of these engines must be looked into with a new perspective. Are piston rings settled as the car leaves the factory?
I look forward to comments.
The boxer engine is assembled with a rational mix of manual and automated assembly. The engine is 'cold tested' sans fluids, where I presume they rotate the crankshaft and measure pressures and friction. It appears though that the flat6 is not 'hot tested' as it is only fired for the first time as the car is driven out of the line for some basic and brief roller/dyno testing (limited to 75MPH). If this is indeed the case, break-in of these engines must be looked into with a new perspective. Are piston rings settled as the car leaves the factory?
I look forward to comments.
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