What is the difference between direct injection and electronic injection?

[SanEdward]

1. Different throttle opening control: Direct injection engines are controlled by rotational speed, with manual operation of the throttle opening knob and manual selection of power mode switch to control the throttle opening. The overall structure is simpler than that of electronic injection engines. 2. Different in maintenance: From actual user experience, the daily maintenance cost of direct injection diesel engines is lower than that of electronic injection diesel engines. Moreover, severely damaged components of electronic injection diesel engines require manufacturer repairs (difficult for individuals or small workshops to repair). 3. Different in energy saving and environmental protection: Direct injection engines have strong adaptability to fuel quality, but the fuel cannot be completely burned, resulting in higher fuel consumption and being less environmentally friendly. Electronic injection engines have relatively higher requirements for fuel quality, ensuring complete fuel combustion, which is more fuel-efficient and environmentally friendly.

[StSophia]

The main differences between direct injection and electronic fuel injection lie in the fuel delivery method and their effects. Direct injection sprays fuel directly into the engine combustion chamber, resulting in more uniform mixing, more complete combustion, and stronger power output. Drivers will notice quicker throttle response and better fuel efficiency. Modern new cars often use this technology, especially turbocharged models where performance improvements are significant. The downside is that it's more prone to carbon buildup, requiring regular cleaning of fuel injectors over time, which increases maintenance costs but offers better environmental performance. Electronic fuel injection sprays fuel at the intake port, where the incoming air carries it into the cylinder. This simpler, more reliable technology is common in older vehicles, offering easier and cheaper maintenance with fewer repair concerns. However, it has slightly higher fuel consumption and less powerful acceleration compared to direct injection. As a car owner, I've noticed that driving a direct injection vehicle provides noticeably smoother acceleration and better highway fuel economy. But when choosing a car, the risk of carbon buildup should be considered to avoid additional maintenance hassles. Overall, direct injection suits performance-oriented drivers, while electronic fuel injection is better for daily use prioritizing durability.

[RileyLee]

In my car repair practice, I often encounter these two systems, which have significant differences. Direct injection sprays fuel directly into the cylinder, offering high control precision, optimized combustion, reduced emissions, and noticeable engine efficiency improvements, such as 5%-10% better fuel economy and quicker power output. However, the injector's tricky location makes it prone to clogging and carbon buildup, requiring frequent cleaning and maintenance. Electronic fuel injection sprays fuel into the intake tract, featuring a simple structure, reliability, and durability, commonly used in older models with lower repair costs and affordable, easy-to-replace parts. The biggest difference between the two technologies lies in the injection point: direct injection is inside the combustion chamber, while electronic injection is at the intake entrance. Direct injection is more advanced but sensitive, requiring high-quality fuel to avoid issues. Electronic injection, though older, is stable and suitable for budget-conscious car owners. Considering both performance and maintenance, direct injection has advantages but demands extra attention.

[StAniyah]

The key difference between direct injection and electronic injection is the fuel injection location. Direct injection sprays fuel directly into the cylinder, ensuring thorough mixing and complete combustion, resulting in lower emissions and energy savings, making it more environmentally friendly. Electronic injection sprays fuel into the intake manifold, leading to incomplete combustion and slightly increased pollution. This difference creates efficiency variations: direct injection offers stronger power and better fuel economy, while electronic injection is simpler to maintain. I appreciate this technical comparison - modern direct injection combined with advanced control optimizes driving performance. Although electronic injection is gradually decreasing, it remains a cost-effective choice.