2021年9月20日 · Much of any discussion of CHT management centers on reducing heat; there’s often not enough talk about avoiding abrupt or “shock” cooling. According to Lycoming, “Sudden cooling is detrimental to the good health of the piston aircraft engine.”

2018年1月4日 · There's no evidence that big power reductions damage horizontally-opposed aircraft engines by "shock-cooling" them. It's time to trash the myth so pilots can focus on real risks to their airplanes and engines.

2024年3月6日 · CHT measures heat energy wasted during the power stroke, when the cylinder is under maximum stress from high internal pressures and temperatures. EGT measures heat energy wasted during the exhaust stroke, when the cylinder is under relatively low stress. High CHTs generally indicate that the engine is under excessive stress for its own good.

Personalized critical hemodynamic treatment (PCHT) should be proposed and applied for shock cases. Targets are the direct results of a specific intervention or clinical practice. Destinations represent the direction of a specific therapeutic strategy or the ultimate outcome for a bundle of therapeutic approaches.

In fact, the real shock cooling comes at the end of the flight when you pull the mixture to idle cutoff and the CHTs drop at more than 100 degrees per minute right away—yet every engine goes through that sort of shock cooling and manages to survive it.

2013年6月29日 · “If you rapidly cool that cylinder, it squeezes down on the piston and we can see all sorts of problems.” This is what is commonly referred to as shock cooling.

If shock cooling were a definite hazard, your engine should fall apart when you bring the mixture into idle cutoff at the end of a flight. CHTs fall at a rate of 100°F/min or more in the first seconds of shutdown—triple the rate that starts the typical "shock cooling" annunciator blinking.

Standard Functions: LeanFind, EGT/CHT, Shock Cooling, Voltage, Differential EGT, Normalize, Long term data module for Data Logging and TIT (if applicable for Engine). Optional Functions: Fuel Flow, Oil Temperature 1 & 2, Turbine Inlet 2 (TIT-2), Outside Air (OAT) and Carburetor Temperature (CRB).

On top of the already impressive individual redline programmability, the UBG-16 comes complete with a CHT shock-cooling limit, and an EGT differential limit. Shock cooling will alert you if your cylinders exceed a cooling rate that could result in thermal shock.

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