Toyota

About: Toyota is a company organization based out in Safenwil, Switzerland. It is known for research contribution in the topics: Internal combustion engine & Battery (electricity). The organization has 40032 authors who have published 55003 publications receiving 735317 citations. The organization is also known as: Toyota Motor Corporation & Toyota Jidosha KK.

Automatic Parking Based on a Bird's Eye View Vision System:

Abstract: This paper aims at realizing an automatic parking method through a bird's eye view vision system. With this method, vehicles can make robust and real-time detection and recognition of parking space...

Intake system of a multi-cylinder internal combustion engine

Abstract: A multi-cylinder internal combustion engine having an intake manifold equipped with a variable venturi type carburetor. A secondary throttle valve is provided for each cylinder. Each of the secondary throttle valves is arranged in the respective manifold branch. An auxiliary intake passage is branched off from the collecting portion of the intake manifold and connected to a distribution channel formed in the cylinder head. Each of the intake ports is connected to the distribution channel via a corresponding channel branch which opens into the intake port at a position near the intake valve. A primary throttle valve is arranged in the auxiliary intake passage and opened in accordance with an increase in level of the load of an engine. The secondary throttle valves are opened after the opening degree of the primary throttle valve is increased beyond a predetermined opening degree.

Collision prediction apparatus

Abstract: A collision prediction ECU of a collision prediction apparatus estimates a state of presence of a detected front obstacle. At this time, the collision prediction ECU estimates the state of presence on the basis of road shape data supplied from a navigation ECU of a navigation apparatus. Further, the collision prediction ECU checks and corrects the calculated road gradient value. At this time, the collision prediction ECU corrects the gradient value on the basis of road gradient data supplied from the navigation ECU. Further, the collision prediction ECU changes a collision avoidance time on the basis of travel environment data supplied from the navigation ECU. Moreover, the collision prediction ECU obtains an ETC gate pass-through signal from the navigation ECU and determines whether the vehicle is passing through the gate. The collision prediction apparatus performs collation prediction on the basis of the corrected values.

Microstructure and Thermal Properties of Polylactides with Different L- and D-Unit Sequences: Importance of the Helical Nature of the L-Sequenced Segments

Abstract: A series of polylactides (PLA) with different stereo sequences are prepared by the copolymerization of L-lactide and DL-lactide. It is confirmed that the glass transition temperature (Tg) of the PLA decreases with decreasing optical purity of the lactate units (%ee) according to the Fox's equation. Analysis of the FT-IR spectra of these PLA samples reveals that the absorbance at 1 265 cm−1 (δCH + νCOC) decreases with increasing L-content while the absorbance at 1 210 cm−1 (νasCOC + rasCH3) increases with increasing L-content. These changes in absorbance are reasonably correlated with the randomness and helical nature of the L-sequenced segments involved in PLA. Namely, the PLA chains with higher L-content comprise a higher number of short helical blocks that are made of several L-lactate units. This difference in helical nature causes the opposite dependences of Tg and density on the L-content of PLA; i.e., the increased Tg and decreased density with increasing L-content. FT-IR spectra of a PDLLA film, NO-PLLA, and BO-PLLA.