Browse

Antiques Collectibles Apparel Baby Kids Items Books， Movies And Music Electronics Free Stuff Garden Outdoor Health Beauty Home Goods Home Improvement Supplies Musical Instruments Office Supplies Pet Supplies Sporting Goods Ticket Toys Games Transportation Others

Used Cars New Cars Others

Business Crafts Design And Web Events Home Improvement Legal Lessons Personal Pets Photography Repair And Technical Support Wellness Writing， Translation， And Transcription Others

Activities & Groups Artists & Musicians Classes & Lessons Events Friendship & Networking Lost & Found Rideshare Sports Teams Volunteers Travel & Travel Partners Skills & Language Swap Other

What is the model of Nissan's variable compression ratio engine?

2 Answers

Summer

07/24/25 4:05am

Nissan's variable compression ratio engine model is VC-TURBO. The impact of engine compression ratio on automobiles is as follows: Effects of high compression ratio: Compression ratio can be understood as the degree of compression of the air-fuel mixture. The more the mixture is compressed, the longer the expansion stroke during power generation, allowing more work to be done, and correspondingly, the efficiency will be higher. Therefore, it can be inferred that the higher the compression ratio, the better the fuel economy of the engine. Effects of excessively high compression ratio: Increasing the compression ratio can enhance power while also reducing fuel consumption. However, the drawback is significant—it is prone to knocking under high load conditions and requires the use of higher-octane gasoline.

Was this review help?

12

0

Share

StGenevieve

08/10/25 11:42pm

This Nissan variable compression ratio engine model is the KR20DDT, which left a deep impression on me during my last automotive technology research. Based on VC-Turbo design, it uses mechanical arms to adjust piston stroke in real-time, intelligently switching compression ratios between 8:1 and 14:1. When accelerating on highways, it reduces compression ratio to prevent knocking while delivering robust 268 horsepower; during daily city driving, it increases compression ratio for enhanced efficiency and noticeable fuel savings. This model is primarily used in the Infiniti QX50 and select new Nissan models, representing modern engine innovation that combines turbocharged power with naturally aspirated smoothness. I particularly admire its adaptive capability - optimizing performance without any manual intervention, making it feel like the car is automatically learning driving habits.

Was this review help?

6

4

Share

Expand All

More Forum Discussions

How to Turn on the Air Conditioning in Dongfeng Fengguang 580?

Method to turn on the air conditioning in Dongfeng Fengguang 580: On the right side, there is a circular dial approximately 5cm in diameter. Press the button on the instrument panel lightly to activate cool air. The button with a sun icon is for heating, which will blow warm air. When using cool air, press the AC button, but it is not necessary when using warm air. The Dongfeng Fengguang 580 is a mid-size SUV with a 5-door, 7-seat body structure. Its dimensions are 4715mm in length, 1845mm in width, and 1715mm in height, with a wheelbase of 2780mm. In terms of suspension, the front suspension of the Dongfeng Fengguang 580 uses a MacPherson independent suspension, while the rear suspension employs a multi-link independent suspension.

Where is the car water pump located?

The car water pump is located inside the engine block. The function of the car water pump is to pressurize the coolant, ensuring its circulation within the cooling system. It continuously circulates water through the radiator and various components of the engine block to dissipate heat, preventing the engine from overheating. Symptoms of a damaged water pump: 1. A damaged water pump can weaken or even stop the cooling circulation, leading to coolant boiling; 2. Unusual noises from the water pump while the engine is running; 3. Coolant leakage near the water pump area of the engine, with traces of coolant color left on the water pump vent holes, resulting in symptoms like high water temperature due to insufficient coolant. Car engines widely use centrifugal water pumps, whose basic structure consists of components such as the water pump housing, connecting plate or pulley, water pump shaft and bearings or integrated shaft bearings, water pump impeller, and water seal device, making it a major component of the vehicle.

Should an automatic car be shifted to neutral when waiting at a traffic light?

When waiting at a traffic light in an automatic car, it is safer to shift to neutral and engage the handbrake. Below are detailed introductions to the car gears: P gear is the parking gear: When the gear lever is in the P position, the transmission is in neutral inside, but the output shaft is mechanically locked. At this time, the car will stop in place even without stepping on the brake. It is generally used when the car is parked for a long time. When shifting into P gear, the car must be completely stationary. Do not shift into P gear when the car is not fully stopped, and always engage the handbrake. When parking on a slope, you need to engage the handbrake first before shifting into P gear. R gear is the reverse gear: When the gear lever is in the R position, the rotation direction of the transmission output shaft is opposite to that of the engine, allowing the car to move backward. When shifting into R gear, the car must be completely stationary. Do not shift into R gear when the car is not fully stopped. N gear is the neutral gear: When the gear lever is in the N position, the gears inside the transmission are idling, and the clutch is not engaged. The load on the transmission is minimal at this time. N gear is generally used for short-term parking. In addition, when towing the car, the transmission should also be shifted into N gear. D gear is the driving gear: When the gear lever is in the D position, the gears inside the transmission automatically switch between the lowest and highest gears according to factors such as vehicle speed and throttle opening, based on the preset shifting pattern. In most cases, you can drive using D gear.

How to Register a License Plate After Successful Online Selection?

For license plate numbers selected online, it generally takes about five working days to receive the plate after confirmation by the vehicle management office. If the online selection is successful, the selected plate number will be reserved for three working days starting from the next day (extended in case of holidays or public rest days). The vehicle owner must complete the vehicle inspection and registration application within this period. Failure to complete the registration within the specified time will result in the invalidation of the selected plate number. Relevant information about license plates is as follows: 1. Introduction: License plates, commonly known as vehicle plates, refer to the plates mounted on the front and rear of a vehicle, displaying the vehicle's registration number, registration region, or other relevant information. 2. Function: License plates serve to number and record information for vehicles, primarily allowing identification of the vehicle's region of registration and enabling access to the owner's details and registration information through the plate number.

What does 'min' mean in cars?

In cars, 'min' represents the vehicle's revolutions per minute (RPM), which is displayed in the tachometer area on the vehicle's dashboard. Here's some extended information about the tachometer: 1. Every motor vehicle is equipped with a tachometer, allowing drivers to effectively monitor the engine's RPM. This is particularly important for automatic transmission vehicles, where gear shifts should be made based on the tachometer readings. 2. The tachometer is an essential instrument in the mechanical industry, used to measure the rotational speed of motors or the frequency of linear velocity. In vehicles, the tachometer is displayed on the dashboard, showing the specific RPM of the vehicle. Drivers can use this RPM information to determine the appropriate gear for driving. Vehicle tachometers can be displayed in various different forms.

Why does the exhaust pipe emit a pungent smell?

Exhaust pipe emitting a pungent smell is due to the odor released when the silicon material inside the three-way catalytic converter heats up, which is a normal phenomenon. Below is a partial introduction to the exhaust pipe:1. The car exhaust pipe plays a role in vibration damping and noise reduction for the car body, extending the life of the exhaust muffler system. The main material of the exhaust pipe is stainless steel.2. Since the exhaust gas from the car leaves the engine under high pressure, the main noise reduction is achieved by the car's exhaust pipe, which contains a muffler inside, significantly reducing the car's noise.3. Its main working principle is to divert the airflow through multiple channels, where these diversions rub and collide with each other, gradually reducing the airflow speed. This cycle repeats, ultimately allowing the exhaust gas to be emitted through the car's exhaust pipe.

Trending Ranking

What to Pay Attention to When Taking Delivery of a Car?

What does TC stand for?

How to Avoid the Rear of the Car Exceeding the Line When Reversing into a Parking Space?

What does it mean when the EPS light is on? Can I continue driving?

What is the Difference Between Night Vision Devices and Thermal Imaging?

Should Chains Use Grease or Engine Oil?

Should the Great Wall VV6 use 92 or 95 octane gasoline?

Which Year's Cars Are China V?

What are the causes of high-speed body shaking?

What is the fuel consumption of the Passat Lingyu 1.8T automatic?

More Forum Discussions

How to Replace the Spark Plugs in an Elysee?

What are the common faults of solenoid valves?

Are New Energy Vehicles Subject to Traffic Restrictions in Other Cities?

What does a small wrench on the car display mean?

Help

Cookie

Cookie Settings

© 2025 Servanan International Pte. Ltd.