Power assembly matching method and device

Abstract

The invention discloses a power assembly matching method comprising the following steps: obtaining upper and lower limit values of the maximum power from a first envelope line according to preset curb weight, and forming a first standby engine set according to the upper and lower limit values; obtaining the upper and lower limit values of the maximum torque from a second envelope line according to the preset curb weight, and forming a second standby engine set according to the upper and lower limit values; obtaining engines simultaneously located in the two sets so as to form a third standby engine set; selecting gear boxes matched with each engine so as to form a gear box set; carrying out simulation calculation for each engine and each gear box in the gear box set, thus determining an engine-gear box combination, and finishing the power assembly matching. The invention also discloses a power assembly matching device so as to fast and effectively obtain an engine and gear box matching scheme, thus shortening the time consumed in the matching design phase.

Description

technical field [0001] The invention relates to the field of automobile design, in particular to a powertrain matching method and device. Background technique [0002] The powertrain refers to a series of components and components that generate power on the vehicle and transmit the power to the road surface. In a broad sense, the powertrain includes engines, gearboxes, drive shafts, differentials, clutches, etc., but usually In general, the powertrain generally only refers to the engine, gearbox and parts integrated into the gearbox. [0003] Powertrain matching design is an important prerequisite for vehicle project approval. It determines the final vehicle power scheme by pre-designing, simulating, and verifying the vehicle's powertrain. At present, automobile companies usually choose powertrain configurations based on existing experience or suggestions provided by consulting companies. This approach has the following problems: First, the development cycle of the complete...

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Problems solved by technology

At present, automobile companies usually choose powertrain configurations based on existing experience or suggestions provided by consulting companies. This approach has the following problems: First, the development cycle of the complete vehicle is too long. Under the current practice, the development cycle of the complete vehicle is long As a result, the forecast of the vehicle market is not comprehensive and timely, which reduces the competitiveness of the vehicle when it is launched; Matching based on accumulated experience cannot guarantee the efficiency and objectivity of matching, which in turn increases the time spent in the R&D phase

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