why my car engine light is on

The V14 engine does exist; it is a 14-cylinder engine with a V-type arrangement, composed of two cylinder banks each containing 7 cylinders. It is typically used in the field of large medium-speed diesel engines, especially common in power generation and marine propulsion systems. Manufacturers such as MAN B&W offer such engines, with an output power range of 7,000 to 16,800 kilowatts. For example, four 14V48/60 units were equipped for ships like SuperStar Virgo, with a single-unit power of 14,700 kilowatts. However, the V14 configuration is not common in the industry; only a few manufacturers like Wärtsilä have launched new V14 versions in recent years (such as the 31 and 46DF series). Historically, the Soviet Union also developed the non-supercharged В-14 diesel engine, which adopted innovative designs such as a monoblock cylinder structure, but it was mainly used in special fields. In addition, it should be noted that engines with "14" in their names like Kohler CV14 are actually single-cylinder small gasoline engines (displacement 398cc), which have nothing to do with the V14 multi-cylinder structure. Currently, V14 engines on the market are mostly dedicated to industrial or marine use, and this configuration has not been adopted in the civilian automotive field.

The largest cylinder bore engine currently known to be applied in the Malaysian market is the Yanmar 6EY17W four-stroke diesel engine, which has a cylinder diameter of 170mm, a piston stroke of 230mm, and a 6-cylinder in-line layout. Its rated power ranges from 374kW to 837kW, and it is specifically designed for commercial ships. This engine has obtained IMO Tier II emission certification, combining fuel efficiency with environmental protection technologies to effectively reduce emissions such as NOx and CO₂. While Malaysia's domestic automobile industry primarily focuses on passenger vehicles like the Proton Putra (equipped with a 1.8-liter four-cylinder engine), the large diesel engine sector still depends on technologies from international brands such as Yanmar, with its 170mm cylinder diameter representing the highest standard in local industrial applications. It should be noted that marine engines and automotive engines have significantly different design standards, with the former placing greater emphasis on durability and sustained power output.

V24 engines are extremely rare in the automotive field. Currently, most mainstream high-performance models adopt V8, V12 or V16 configurations, while the motorcycle field is dominated by V2 or V4 engines. Take Ducati as an example: the typical power output of its V2 engines ranges from 120 to 157 horsepower. For instance, the 955cc V-twin water-cooled engine can generate 157 horsepower at 10,750 rpm, while the 890cc version can output 120 horsepower. Such engines feature lightweight designs, such as titanium connecting rods and magnesium alloy components, and are equipped with advanced valve control systems, balancing high-speed performance and fuel efficiency. For higher power, V4 engines can be considered, like the 205-horsepower version of the Ducati Streetfighter V4. It is worth noting that engine performance depends not only on the number of cylinders but also on displacement, turbocharging technology and electronic management systems.

14-cylinder engines do exist, but they are primarily employed in specialized applications rather than conventional passenger vehicles. These engines typically feature a V-type or horizontally opposed configuration and are predominantly utilized in large vessels, heavy-duty construction equipment, and certain aircraft. Their fundamental design objective is to fulfill ultra-high power demands. For instance, the V-type 14-cylinder diesel engine, with its dual-bank arrangement of 7 cylinders per bank, delivers exceptional torque output while enhancing combustion efficiency via a precision valvetrain (4 valves per cylinder). Notably, owing to their substantial dimensions and exorbitant manufacturing costs (with certain variants potentially exceeding RM500,000), 14-cylinder engines are exceptionally uncommon in civilian automotive applications, and presently, no mass-produced vehicles in the Malaysian market incorporate them. Regarding engine modifications, converting an existing powerplant to a 14-cylinder configuration necessitates redesigning both the crankshaft balancing system and cooling architecture, constituting a professional-grade engineering endeavor. By comparison, mainstream local models like the Mazda Skyactiv-G series utilize an inline 4-cylinder design, achieving efficient output of 114 horsepower through high compression ratios and dual-cycle technology, thereby better aligning with the economic and pragmatic requirements of everyday driving.

24V is one of the common voltage standards in automotive electrical systems, primarily applied to large or heavy-duty vehicles such as diesel-powered trucks or buses. Due to their high engine compression ratios and significant frictional resistance, these vehicles require higher voltage (typically provided by two 12V batteries connected in series) to deliver stronger starting current, ensuring the starter can overcome mechanical resistance. Under normal operation, the no-load voltage of a 24V system is around 26V, while under load it must remain above 22V to prevent starting difficulties. During generator charging, the voltage stabilizes between 27V and 29V. In comparison, 12V systems are more prevalent in small and medium-sized gasoline vehicles with lower voltage demands. The 24V system's advantages include supporting higher-power electrical devices (such as heavy-duty lighting or vehicle air conditioning) while reducing line current and energy loss. Note that voltage abnormalities (e.g., below 22V) may cause starting failures, whereas prolonged excessive voltage can damage the battery. For vehicle owners, regularly inspecting battery condition and avoiding excessive electrical usage after engine shutdown are crucial for maintaining 24V system stability.