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The worst problem met in air-cooled aircraft engines was the so-called "shock cooling", when the airplane entered in a dive after climbing or level flight with throttle open, with the engine under no load while the airplane dives generating less heat, and the flow of air that cools the engine is increased, a catastrophic engine failure may ...
Badly affected cars would see coolant in the oil, as well as oil in the coolant, and would require the replacement of the complete engine assembly. Until the cylinder head casting was redesigned some time in 1998, some vehicles would require this repair more than once, and replacement cylinder heads could develop the same crack.
A coolant is a substance, typically liquid, that is used to reduce or regulate the temperature of a system. An ideal coolant has high thermal capacity, low viscosity, is low-cost, non-toxic, chemically inert and neither causes nor promotes corrosion of the cooling system. Some applications also require the coolant to be an electrical insulator.
The oil pressure idiot light lights when engine oil pressure drops below a predetermined level. The light normally appears when the vehicle ignition is turned on, but the engine is not running, as it detects no oil pressure due to the oil pump not operating (the oil pump is powered off the crankshaft, so only operates when the engine is running ...
Its oil reservoir is not remote, but integral to the engine, sitting atop the gearbox. This design eliminates external oil lines, allowing simpler engine removal and providing faster oil warm up. The Yamaha XT660Z (and R/X models) use a dry-sump design where the bike's frame tubing is used as the oil reservoir and cooling system [ 11 ]
The power steering reservoir was relocated from the front of the engine and onto the radiator shroud. A quieter, improved variable-speed radiator fan replaced the outgoing two-speed unit. Furthermore, the engine oil fill cap was moved to the passenger side valve cover. Lastly, an accessory belt shield was now mounted to the front of the engine ...
Chevrolet added a coolant-overflow bottle and an electronic low-coolant indicator in 1974 that could be retrofitted to earlier models at no cost. Under a revised 50,000-mile (80,000 km) engine warranty for 1971 to 1975 Vegas, the owner of a damaged engine could choose a replacement with a new short block or a rebuilt steel-sleeved unit, which ...
The skimmer may be more effective at removing floating oil which might otherwise cause foaming. Surface blowdown is normally fed to a flash tank and heat exchanger for heat recovery. The flashed steam can be used in the feedwater heater. These energy economies are seldom practical with infrequent bottom blowdown.