What is Porsche PCM?

1 Answers
OWilliam
07/29/25 12:20pm
Engine Control Module. The ECU (Electronic Control Unit), also known as the vehicle's onboard computer, is the central module that all other modules in the car communicate with. The PCM (Powertrain Control Module) is responsible for receiving sensor signals and performing complex calculations to control fuel supply, air distribution (electronic throttle), injection and ignition timing, intake pressure adjustment, as well as determining engine compensation control coefficients based on factors such as temperature, load, knock, and combustion conditions. Additional relevant information is as follows: 1. Introduction: Modern digital transmission systems use the Pulse-Code-Modulation (PCM) system. Initially, PCM was not designed for transmitting computer data but rather to enable a single trunk line between switches to carry more than one telephone signal. PCM has two standards: E1 and T1. 2. Services: PCM can provide users with a variety of services, including digital data leased line services with rates ranging from 2M to 155M, as well as other services such as voice, image transmission, and distance learning. It is particularly suitable for users who require higher data transmission rates and greater bandwidth.
Was this review help?
4
2
Share
More Forum Discussions

Do Volkswagen cars burn engine oil?

Some Volkswagen models equipped with turbocharged engines do burn engine oil. The engine that experienced widespread oil burning issues in Volkswagen vehicles is the second-generation EA888 engine. There are two main reasons for Volkswagen's oil burning problem: one is a design flaw in the crankcase forced ventilation system, and the other is the presence of crosshatch patterns on the cylinder walls. When a car engine is operating, some gases enter the crankcase through the piston rings. If there's too much gas in the crankcase, the pressure increases, which can affect the downward movement of the pistons. The crankcase forced ventilation system includes a component called the oil-gas separator, which is designed to separate oil vapor. However, this component in Volkswagen engines has a design defect that prevents complete separation of oil vapor, leading to oil burning. The crosshatch patterns on the cylinder walls can store some engine oil, which helps lubricate the cylinder walls during high-speed operation. But during low-speed driving, the oil stored in these patterns gets burned off.
6
5
Share

Is It Harmful to Add Another 10 Yuan After the Pump Nozzle Clicks Off?

Adding another 10 yuan after the pump nozzle clicks off is not significantly harmful. Below are specific precautions to note when refueling: 1. Prevent Theft When Leaving the Vehicle: Always lock your car when stepping away to avoid theft incidents. Some gas station roads have slight slopes, so it's advisable to engage the handbrake while refueling. 2. Turn Off the Engine and No Smoking: This prevents potential explosions. Avoid using mobile phones at gas stations as their radiation may pose unnecessary risks. Ideally, step away from the vehicle during refueling. The optimal refueling times are early morning or evening.
18
0
Share

What are the penalty items for parallel parking?

Penalty items for parallel parking include: stopping or stalling midway, crossing the line, and other minor issues. Here are the detailed explanations of the penalty items for parallel parking: 1. Stopping or stalling midway: (1) Unfamiliarity with the clutch. (2) Driving too slowly. Being overly cautious to avoid missing reference points due to nervousness, driving too slowly may cause the vehicle to stop midway when encountering a slight slope. 2. Crossing the line: (1) The vehicle is not properly aligned with the boundary line. (2) Steering wheel is not turned in time. 3. Other minor issues: Rearview mirrors not properly adjusted during preparation: Whether the rearview mirrors are set too high or too low, the reference points will differ significantly from the original.
12
4
Share

What Does It Mean When a Car Model Is Discontinued?

When a car model is discontinued, it means that the manufacturer or dealer has stopped selling that particular vehicle. If a specific model is discontinued, it indicates the cessation of sales for that model. Reasons for discontinuing fuel-powered vehicles: 1. Air Pollution: Vehicle emissions contain various greenhouse gases such as carbon monoxide and nitrous oxide. These gases can block ultraviolet sunlight reflected back to the Earth's surface. Solar energy becomes trapped in the Earth's atmosphere, leading to temperature changes. This is one of the primary causes of global warming. It is estimated that global temperatures have risen significantly over the past century, and if millions of additional cars continue to be added each year, temperatures will rise even more rapidly, posing a threat to humanity on this planet. 2. Water Pollution: Vehicle pollution also affects water quality. When emissions mix with rain, they form acid rain that flows into rivers and oceans. Oil leaks from cars mix with rainwater, leading to water contamination. Studies have found that urban runoff is the largest source of water quality degradation. These pollutants disrupt the balance of aquatic environments, depriving many plants of the water they need to survive. Water pollution also makes it difficult for fish and other aquatic life to survive, ultimately affecting human health by making fish inedible and causing various diseases. 3. Noise Pollution: Cars increase environmental decibel levels, making them one of the largest sources of noise pollution. Noise pollution disrupts ecological cycles, and the behavior of many animals changes due to high noise levels. Beyond environmental impact, noise pollution can also lead to numerous human health issues, such as high blood pressure and psychological stress. While the noise from a single car is usually tolerable, the collective noise from many vehicles can create deafening levels of sound.
16
3
Share

How to Renew Car Insurance in the Second Year for a New Car?

For renewing car insurance in the second year of a new car, you can directly go to the insurance company's business hall to handle the car insurance. Alternatively, you can choose telephone car insurance or online car insurance methods. Generally, car owners purchase "full coverage" in the first year, but in the second year, they can freely customize their car insurance based on the previous year's experience. Important considerations for the second-year renewal: 1. Avoid filing claims at the end of the first year: Many car enthusiasts are aware of this rule—after purchasing insurance in the first year, the premium may increase by about 20% in the second year, which is not a small amount. Although the exact figure may vary, it generally won't be lower than this base. 2. Bypass insurance intermediaries and handle it yourself: Nowadays, more and more car dealerships offer insurance services for car owners. Many male car owners find it convenient to have someone assist them, but they may not realize that different insurance companies charge different fees, and dealerships may add a 20%-30% service fee. Therefore, it's essential to bypass the dealership and handle it yourself, as the process is quite simple. Moreover, you can compare different options when handling car insurance on your own. 3. Renew proactively without delay: When renewing in the second year, it's recommended to stick with the same insurance company, as they often offer discounts of around 10% to loyal customers. Frequently switching insurance companies might lead to worse deals. Proactively renewing in advance makes you a preferred customer for the insurance company, significantly reducing claim processing time.
2
5
Share

Is the Volkswagen Phideon the Phaeton or the Phideon?

Volkswagen Phideon is the Phideon. Below is the relevant introduction: 1. Phideon Brand: The new generation successor following the Phaeton, inheriting the craftsmanship and skills of Dresden, becoming the new flagship of the VW brand. Phideon originates from the goddess Fidēs in ancient Roman mythology, the most trusted deity, a symbol of vows, and the perfect combination of strength and aesthetics. 2. Development Platform: 'Hui' implies brilliance and radiance, symbolizing grandeur and elegance. The Phideon is based on the same development platform as the Audi A6L, featuring many firsts in its class of high-end German models, such as the 'Infrared Night Vision Imaging System', 'Head-Up Display System', and 'Adaptive Air Suspension'.
7
0
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.