Abstract: A vehicle engine compartment assembly includes an upper longitudinal beam and a front subframe disposed under the upper longitudinal beam. The vehicle engine compartment assembly further includes a middle longitudinal beam and a connecting supporting member. The middle longitudinal beam is disposed between the upper longitudinal beam and the front subframe. The connecting supporting member is connected to each of the middle longitudinal beam, the upper longitudinal beam and the front subframe. In the vehicle engine compartment assembly, the middle longitudinal beam is added between the upper longitudinal beam and the front subframe, and the upper longitudinal beam, the middle longitudinal beam and the front subframe are connected together to form a stable structure having a shape of “”. When the vehicle suffers collision at a high speed, the impact force is transferred through three load transfer paths to improve the energy absorption effect.

Abstract: An automotive generator control method includes inputting a current vehicle speed, an actual battery level, an actual battery temperature and an engine operating efficiency (S11); calculating an optimal battery level by using a preset first mapping table, on a basis of the actual battery temperature and the current vehicle speed; taking a difference between the actual battery level and the optimal battery level as a target power-generation difference (S12); calculating a target power-generation voltage by using a preset second mapping table, on a basis of the target power-generation difference and the engine operating efficiency (S13); and outputting the target power-generation voltage (S14). The automotive generator control method and control device can precisely control a power-generation voltage of a generator according to a current engine/vehicle working condition and a battery working condition, so as to achieve primary energy recovery of the generator in a highly efficient manner.

Abstract: A continuously variable valve lift system includes a driving swing arm, a camshaft, a valve structure, a control shaft and an adjusting swing arm. The valve structure includes a roller rocker arm and a valve connected to the roller rocker arm. The driving swing arm has a driving arc surface. The driving arc surface contacts with the roller rocker arm to drive the valve to perform a reciprocating movement. The driving swing arm is sleeved on the control shaft and is capable of swinging around the control shaft. The control shaft is provided with a mounting part. The adjusting swing arm is connected to the mounting part and is capable of swinging relative to the mounting part. The adjusting swing arm is disposed between the camshaft and the driving swing arm. Two sides of the adjusting swing arm are contacted respectively with the camshaft and the driving swing arm.

Abstract: A continuously variable valve lift system includes a driving swing arm, an adjusting member, an adjusting swing arm and a camshaft. The driving swing arm is provided with a first connecting part, the adjusting member is provided with a second connecting part, and the adjusting swing arm is provided with a third connecting part, wherein two sides of the second connecting part abut against the first connecting part and the third connecting part, respectively, the second connecting part abuts against the third connecting part to form a spiral surface therebetween, and the adjusting member is further capable of sliding along an axial direction of the middle shaft, and the camshaft contacts with the adjusting swing arm.

Abstract: A combustion control method and a combustion control system with variable excess air coefficient for gasoline engine are provided. The combustion control method with variable excess air coefficient for gasoline engine comprises steps as follows: monitoring engine operating condition; determining current engine load condition based on the engine operating condition, wherein the engine load condition comprises part load, high load, and full load conditions; and selecting an appropriate excess air coefficient combustion mode in accordance with the current engine load condition; wherein the engine uses lean combustion mode with excess air coefficient of 1.6˜2.0 when the current engine load condition is the part load condition; the engine uses combustion mode with excess air coefficient of 1 when the current engine load condition is the high load condition; and the engine uses combustion mode with excess air coefficient of 0.8˜0.9 when the current engine load condition is the full load condition.

Abstract: A vehicle engine compartment assembly includes an upper longitudinal beam and a front subframe disposed under the upper longitudinal beam. The vehicle engine compartment assembly further includes a middle longitudinal beam and a connecting supporting member. The middle longitudinal beam is disposed between the upper longitudinal beam and the front subframe. The connecting supporting member is connected to each of the middle longitudinal beam, the upper longitudinal beam and the front subframe. In the vehicle engine compartment assembly, the middle longitudinal beam is added between the upper longitudinal beam and the front subframe, and the upper longitudinal beam, the middle longitudinal beam and the front subframe are connected together to form a stable structure having a shape of “”. When the vehicle suffers collision at a high speed, the impact force is transferred through three load transfer paths to improve the energy absorption effect.