Ford’s 1.6-L EcoBoost turbo four-cylinder engine is reputed to overheat and, reportedly, there have been some engine fires in both the late-model Fusion sedan and Escape crossover that use the engine.Īmateur accessory installations can inadvertently introduce an electrical fault and cause a fire down the road. In other instances, an engine may overheat by design or manufacture. General Motors was forced to recall some older models – a second time – for oil seeping past deteriorating valve cover gaskets, causing oil to drip onto the hot exhaust manifold of its 3.8-L V6 engines, where it could ignite. The exhaust manifold on a hot-running engine can reach in excess of 500☌ – high enough to ignite any of these liquids oozing from a leaky seal. Combine an overheated engine with the numerous flammable liquids that allow a car to run, including motor oil, automatic transmission fluid, hydraulic brake fluid and engine coolant (ethylene glycol), and you have a recipe for disaster. A worn-out water pump or cooling fan is all it takes to send the engine temperature high into the red zone. Electrical faults in high-current devices such as power seat or window motors can result in ignition of insulation, carpets or even discarded paper accumulated under seats.Īn overheated engine is a common occurrence as a neglected vehicle ages. And it doesn’t always have to occur in the engine compartment. Protection devices such as fuses, fusible links and circuit breakers provide an element of safety in case of arcs or overloaded wiring, but sometimes components breakdown, shoddy repairs or poor installation of aftermarket equipment can defeat these safeguards. Engines move on their mounts and virtually everything under the hood shakes to some degree, allowing cables to rub off their insulation or fray over time and a short circuit to develop. Even broken light bulbs are a source of ignition, since headlight filaments heat up to around 1400☌. Battery and starter cables carry sufficient current to ignite combustibles in the event of a fault condition. A car’s 12-volt battery can produce hydrogen gas when charging, creating an explosion hazard. The truck’s aluminum hood and body panels melted away, but not before producing some vivid colours as the magnesium burned.Įlectrical system failures are the second most common cause of vehicle fires. Wood and his crew watched a late-model Ford F-150 burn to the ground after it had been serviced (badly) for a fuel leak. Woods says today’s fuel pumps aggravate the problem by working harder to compensate for the drop in pressure in a leaky line, inadvertently feeding a potential fire. Gasoline fires typically arise from old, rotten fuel lines or faulty fuel line connectors, as well as leaky fuel-injection systems. And if the temperature rises above 257☌, say around a hot exhaust manifold, gasoline will auto-ignite without the need for a spark. When it leaks and vapourizes into the air under the hood, the fuel/oxygen mix is ideal for ignition. Michael Wood points out that the flash point of gasoline is -43☌, which means it’s always evaporating to form a combustible concentration of gas. We asked Michael Wood, an acting captain at Toronto Fire Services, about the common causes of vehicle fires and what he’s witnessed on the job.įuel leaks are the most common cause of automobile fires. Proper maintenance goes a long way in keeping your ride from going up in smoke. In reality, automobile fires are entirely preventable occurrences that are frequently the result of slipshod and even neglectful ownership. Lalu dia menunjuk kepala si pak pengawas sambil berteriak, "botak!!!" :D. Di halaman terakhir Damar suka menunjuk-nunjuk topi Sir Tophamhatt yang terbang. Kadang Thomas cemberut, kelelahan dan akhirnya tersenyum karena menang balapan. Mbeeeek." Selain mengomentari gambarnya Damar juga suka menirukan ekspresi Thomas dan Gordon di setiap halaman buku. Misalnya, "Gordon udah nyampe atas bukit tuh. Entah kenapa Catch Me jadi Come? Kadang aku bacain sesuai teks aslinya. "Ibuk, baca buku Kam Kam (Come Come)" Begitu ajakan Damar untuk membaca buku ini. Kadang Thomas cemberut, kelelahan dan akhirny Favorit Damar yang lain.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |