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| ENGINE PROTECTION UNITS |
Exhaust Gas Temperature - (EGT) | | Unlike petrol vehicles, diesels are light-years behind when it comes to new technology and have only recently started making use of engine management and control systems. | | Although the newer generation vehicles make use of this technology, they are not 100% safeguarded against engine failure. | | The older versions have absolutely no protection whatsoever. | |  | |
| The most common, but not the only reason for engine failure on these vehicles, is excessively high combustion and exhaust gas temperatures. | | At SAC we realised that something needed to be done about all these engine failures and we developed safeguard units and gauges to prevent more engine failures on these vehicles. | | | | |
| All you need to know about EGT |
| Most turbo charged diesel bakkies and cars today have all the most essential instrumentation fitted as standard equipment. |
| They have a good range of warning lights and tell-tale systems on the dashboard, however at SAC we feel that the manufacturer left out the most important monitor of all. |
| The EGT Gauge |  | |
| There are many factors which affect the EGT’s on a diesel turbo, some of which can be controlled but in most cases one wouldn't even know that the EGT is excessive or climbing until it was too late. |
| Our experience over the past 6 years or so has dictated the need to develop and produce a simple EGT gauge, which can be fitted to any diesel turbo charged vehicle. |
| With roughly 35 diesel turbo charged vehicles passing through our workshops countrywide every day, we are well aware of what is happening to components on or inside a engine which are exposed to excessively high EGT's for long periods of time. |
| We also know that 90% of diesel turbos today run with EGT's around 830ºC, some even as much as 950ºC. |
| People who tend to be in a hurry or those who tow or even drive with heavy loads are the ones who are most affected by high EGT's. |
| The worst is that the engine won't necessarily fail after only a few incidents of high EGT; in our experience we find the vehicles to show their damage a at higher mileage although destruction starts at the very first exposure. |
| About the gauge |
| The gauge that we use is specifically designed and developed for SAC to our requirements. |
| We made the gauge as universal as possible in order to use it on as many different models as possible. |
| It has a thermo couple and 12V supply. |
| The thermo couple fits into the exhaust manifold between the cylinder head and the turbocharger and has a sensor on the tip, which needs to be in the main flow of exhaust gasses exiting the engine. |
| The thermo couple, which we use, can accommodate temperatures up to 1300ºC. |
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