How much fuel is consumed by a 160-horsepower engine idling for one hour?
2 Answers
1 horsepower = 0.74kw, 420 horsepower = 310.8KW, 310.8X0.188=58.43(kg)/h, this is calculated at full load. The following are the reasons for unstable engine idle speed: 1. Classification by cause correlation: Direct causes: Dirt, wear, incorrect installation of mechanical parts, etc., leading to changes in the power of individual cylinders, resulting in an imbalance in the power of each cylinder, causing unstable engine idle speed; Indirect causes: Abnormal engine electronic control system, leading to poor combustion of the air-fuel mixture, making it difficult to balance the power of each cylinder, resulting in unstable engine idle speed. 2. Classification by fault system: Intake system, fuel system.
As a frequent driver, I think a 160-horsepower car burns about 0.8 to 1.2 liters of fuel when idling for an hour, depending on the engine type. Gasoline cars usually consume more than diesel ones. For example, my old sedan can burn over 1 liter per hour when idling with the AC on. These low-power engines have lower output when idling, but they still consume fuel quickly. In cold weather or with an aging battery, fuel consumption can be even higher. If this happens often, it's not just a waste of money but also causes wear and tear on the engine. I suggest avoiding prolonged idling—turning off the engine when waiting at a red light for more than a minute is more cost-effective and helps reduce carbon buildup. Overall, the cost per hour is just a few dollars in fuel, which isn’t really worth it.
