What Sensors Are Used in Cars?

1 Answers
Beau
07/30/25 7:09am
Automobiles primarily utilize the following sensors: 1. Crankshaft position sensor and camshaft position sensor, which control the opening and closing sequence of engine intake and exhaust valves. 2. Front oxygen sensor and rear oxygen sensor, which monitor exhaust emissions and provide the central computer with data for optimal air intake and fuel injection, thereby optimizing fuel efficiency and meeting emission standards. 3. Oil pressure sensor, which triggers an alarm when oil pressure falls below a threshold. 4. Air flow sensor and throttle position sensor, which regulate throttle opening and air intake under different temperature conditions, especially during cold starts in winter by enriching the air-fuel mixture to increase idle speed. 5. Tire pressure monitoring system, which alerts when tire pressure is below (or above) the rated pressure.
Was this review help?
8
2
Share
More Forum Discussions

When Can High Beams Be Turned On?

High beams should be used on roads at night without streetlights or with poor lighting. On roads with sparse traffic, when navigating corners, curves, or unsignalized intersections, reduce speed and alternately switch between high and low beams as a warning. Relevant details are as follows: 1. Urban roads are usually equipped with streetlights, so high beams are rarely needed; they are typically used only in remote areas or on highways. However, after turning on high beams, do not forget to switch them off when necessary. Failing to switch from high beams when meeting oncoming vehicles on regular roads can make it nearly impossible for the other driver to see clearly, essentially driving blind. Pedestrians crossing the road, obstacles ahead, or non-motorized vehicles become invisible, posing significant danger. 2. If high beams are used when following another vehicle too closely, the glare can impair the vision of the driver ahead, reducing their visibility range. This is especially problematic when changing lanes, as it becomes difficult to see the situation behind or judge distances accurately.
1
4
Share

What is the fuel consumption of the 2021 Sagitar 1.4t?

The fuel consumption of the 2021 Sagitar 1.4t is 7.02L/100KM. Below is an introduction to the 2021 Sagitar: 1. Configuration. The new model comes standard with car networking and a liquid crystal dashboard across all variants. The entry-level Fashion variant features an 8-inch full LCD dashboard and adds the CRS3.0 infotainment system. The Luxury variant is equipped with a 10.3-inch LCD dashboard and adds smart navigation, voice recognition system, intelligent connectivity control, and other functional configurations. 2. Exterior design. The 2021 Volkswagen Sagitar continues the family-style design language, featuring a notably elongated hexagonal grille that is entirely wrapped in chrome trim to enhance its premium feel. The headlights are designed to be full and rounded, with clearly defined lines on the hood. The fog light area adopts a through-type design, and the air intake is elongated.
5
1
Share

What types of vehicles are referred to as motor vehicles?

Motor vehicles include cars, trailers, trolleybuses, agricultural transport vehicles, motorcycles, motorized tricycles, and transport tractors (including wheeled tractors with trailers), as well as wheeled special-purpose machinery vehicles, but exclude any vehicles operating on tracks. Motor vehicles are driven by their own power devices, have two or more wheels, do not require overhead lines or tracks, and can travel on roads or off-road surfaces. They are primarily used for transporting people, goods, or fulfilling certain specialized work requirements as "vehicles." Vehicle classification is a fundamental aspect of various vehicle standard systems. Different standards have different vehicle classification methods, which may reference each other while also having their own focuses and distinctions. Only by correctly understanding and grasping the basic concepts and applicable scopes of different classification methods, and clarifying the connotations and extensions of specific definitions, can one accurately apply relevant standard clauses in motor vehicle inspection practices, precisely determine vehicle types, and correctly issue inspection conclusions.
20
2
Share

Is it necessary to press the brake when shifting gears in an automatic transmission car?

Automatic transmission cars require pressing the brake when shifting gears. Generally, these cars have gear positions such as P (Park), R (Reverse), N (Neutral), and D (Drive). The reason for pressing the brake during gear shifting is to prevent misoperation and ensure safety. Regardless of whether the gears can be freely switched between each other, shifting gears while the vehicle is in motion is unsafe and can also cause some damage to the car's transmission. Some automatic transmission models do not require pressing the brake when shifting gears because many models are designed with an unlock button that prevents shifting from P to other gear positions without pressing the brake. Some vehicles even prohibit shifting from P to other gear positions if the accelerator is pressed to a certain depth, even when the brake is pressed. For safety reasons, it is recommended to press the brake when performing gear-shifting operations in automatic transmission vehicles, just as one should develop the habit of pressing the clutch when starting a manual transmission car.
9
4
Share

What is the general capacity of a car battery?

The battery capacity of small cars ranges between 32ah and 80ah. Among them, the battery capacity of vans is 36ah, 40ah, 45ah, or 48ah, while that of sedans is 45ah, 54ah, or 60ah, and pickup trucks have battery capacities of 60ah or 80ah. Car batteries are divided into three types: conventional batteries, dry lead-acid batteries, and maintenance-free batteries. Conventional batteries: composed of lead and lead oxide; Dry lead-acid batteries: the negative plate has a higher storage capacity; Maintenance-free batteries: consume less electrolyte and do not require distilled water replenishment during their service life. Car battery maintenance methods: Regular inspection is necessary during use to keep the battery clean and dry, ensure the vent holes are unobstructed, and clean the exterior of the battery periodically; After the car is turned off, minimize the use of electrical appliances inside the vehicle; Car batteries have a limited lifespan, so they should be replaced regularly; If the vehicle is not used for an extended period, it should be started periodically.
17
5
Share

What are the differences between the BMW 530 and 540?

Here are the main differences between the BMW 530 and 540: 1. Power: The two models differ in configuration and power, primarily in the engine displacement. Both the BMW 530 and 540 are positioned as mid-to-large-sized cars. In terms of power, the BMW 530 is equipped with a 2.0T high-power turbocharged engine, which delivers a maximum power of 185 kW and a maximum torque of 350 Nm. The BMW 540, on the other hand, features a 3.0T turbocharged engine, producing a maximum power of 250 kW and a maximum torque of 450 Nm. Both models are paired with an 8-speed automatic transmission. 2. Configuration: The BMW 540 offers higher specifications than the 530. Standard features in the 540 include heated/ventilated rear seats, sunshades for the rear and side windows, exceptionally comfortable headrests, and a panoramic moonroof, providing rear passengers with a superior riding experience.
14
2
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.